How Men Fall in Love and How Their Brain Responds

When we think of love, we think of the heart, but love really happens in the brain. As you go through the stages of love, certain neural activity occurs.

Love is very much a process, but interestingly, the process differs slightly between men and women. How men fall in love is not the same as how women do.

And that’s what we’ll be looking at today, how men fall in love and what happens in their brains when they do. We’ll look at the biology and psychology of falling in love, the different stages of love men go through, and the gender differences.

Love can often be confusing, but hopefully, this article will help explain how it works and why it has such a powerful effect.

Stages of Falling in Love for a Man

Before we dive into the brain chemistry and biology of love, let’s first take a look at the three basic categories or “stages” of love according to biological anthropologist Helen Fisher, Ph.D.:

  1. Lust (Sex Drive): Lust is not love and shouldn’t be mistaken for it. It’s a temporary feeling that enables you to find potential mating partners. You could lust for someone you’re in love with, but you could also lust and have sex with someone you don’t love.
  2. Attraction (Romantic Love): During this stage, you focus your attention and mating energy on one person; you obsessively think about them and crave their company. Scientists often compare this stage to addiction as it activates the brain’s reward center and has powerful effects on our behavior and emotions. It usually lasts between six months and two years.
  3. Attachment (Long-term Love): This stage is key to the success of long-term relationships. It’s a calmer form of love that affects us differently compared to the attraction stage. Attachment allows couples to stay together long enough to raise children, develop a deep, meaningful bond, grow old together, and feel contentment.

Love usually begins at stage 2 (attraction) and progresses to stage 3 (attachment), but lust drives many couples to meet and form a bond, which can later lead to love. It’s possible in some cases for couples to skip stage 2 and go straight to stage 3, such as in arranged marriages.

The three stages above apply to both men and women, but what happens on a biological level is where the differences lie.

How Do Men Fall in Love?

Certain neurotransmitters and hormones need to build up over time before a man or woman falls in love.

According to love biologist Dawn Maslar, the chemicals dopamine and vasopressin are vital for a man to start falling in love, whereas it’s oxytocin and dopamine for women.

Oxytocin, often nicknamed the love or cuddle hormone, also plays an important role in men but at a later stage. When men are dating but not yet in love, their testosterone levels are higher, which blocks the bonding effects of oxytocin.

Generally, the hormones and neurotransmitters needed for love build up gradually while dating, getting to know, and building trust with a potential partner.

Does Sex Make Men Fall in Love?

A common misconception is that men fall in love in the bedroom, but Maslar believes that some men may lose interest if sex happens too quickly.

A woman may bond more closely to a man after sex in the early dating stages, but the man won’t necessarily reciprocate those feelings right away. Here’s why:

  • A man’s dopamine and vasopressin increase when he’s dating a woman, enjoying it, and is sexually interested in her. But his vasopressin drops when he has sex with her.
  • A woman’s dopamine and oxytocin will also gradually increase if she’s enjoying dating a man and is sexually interested in him. However, the difference is, her oxytocin rises considerably when she orgasms.

The Coolidge Effect

It’s believed that the Coolidge effect can sometimes come into play when sex happens quickly. The Coolidge effect is a biological phenomenon observed in animals whereby males progressively lose interest in mating with the same female yet have heightened sexual interest in new females.

Maslar explains that when a man first starts dating, he’s very excited, and his dopamine and vasopressin go up, but if he’s satiated sexually too quickly, they drop back down. Therefore, he may lose interest, pursue other women, and not be around long enough to fall in love.

However, it’s also important to note that this isn’t always the case, and men can still fall in love with women they have sex with early in the relationship. However, couples need to be careful not to confuse the exhilarating feeling of lust for love to avoid trouble later down the road.

Why Commitment Could Be the Key to Love for Men

Studies show that men in committed romantic relationships have 21% lower testosterone than men who are not. That means when a man commits, his testosterone will no longer be blocking the bonding hormone oxytocin, helping him fall in love and develop a long-term bond.

The study also showed that marriage isn’t a defining factor, as both married and unmarried men can be in committed relationships and experience lower testosterone.

When a man’s testosterone drops after committing to someone, it doesn’t mean he will experience diminished sex drive, but he should lose interest in pursuing sex from other women.

Love Tips for Men and Couples

Okay, so we’ve talked a lot about what happens to a man when he falls in love and the chemical processes involved, but what practical advice can we take from it? Well, here are six tips for men and couples looking for love:

  1. Consider abstaining from sex for a while to see if your relationship is built on more than lust.
  2. If a man becomes “addicted” to his partner, this could indicate he’s in the romantic love stage.
  3. Men should pursue women rather than vice versa. When a man has to invest more into the relationship, he will value it more.
  4. Men should prioritize finding someone they can commit to if they want to fall in love.
  5. If a man loses interest in pursuing other women and finds his partner most desirable, this is a good indicator he’s in love.
  6. Couples should focus on each other’s positive attributes if they want a happy relationship and attachment (long-term love).

Final Words

Understanding how love affects the brain and body won’t make it any less intense or memorable. Still, it might help you avoid some unworkable relationships, heartbreak, and other potential pitfalls along the way.

If you’re still unsure whether you’re in love, if your partner loves you, or you have any other relationship concerns, our therapists here at Calmerry are always ready to help. It can be hard to look at things rationally while under the influence of love, so online counseling is a great way to receive impartial, expert advice.Are you wondering how men fall in love? We dive into the biological and psychological triggers that make a man’s brain fall deeply in love.

Kate Skurat

Kate Skurat

Licensed Mental Health | Washington, United States

Kate has a B.S. in Psychology and M.A. in Clinical Psychology from Pepperdine University and has worked in healthcare since 2017. She primarily treated depression, anxiety, eating disorders, trauma, and grief, as well as identity, relationship and adjustment issues. Her clinical experience has focused on individual and group counseling, emergency counseling and outreach. Read more