A guy who’s in love may not necessarily shout about it. However, there are some subtle, almost invisible, things that a guy will do only when he’s deeply in love with another person.
Scientists have tracked these patterns for years. Here are twelve things men secretly do only when they’re head-over-heels for someone else. Do you think the heart or the habit changes first?
His testosterone drops from single-guy levels

One of the biggest changes to a guy in love is related to his hormones. The average testosterone levels in committed men fall compared to single men, although it’s not a sudden drop.
The effect? Lower testosterone levels have been connected with more pair-bonding behavior. Guys with less testosterone tend to be more patient & caregiving. The change is especially noticeable in long-term couples, even though guys may not realize it.
He displays resources as a subtle “stay-with-me” cue

Guys who are in love usually share small tokens of security. They may pick up groceries more often or cover the cost of a trip, perhaps even fix something before their partner asks them to. But the guy’s not trying to show off.
No, they’re trying to show their partner that they’re there for them, and studies show guys exhibit such behavior when they’re emotionally invested. It’s rare when they’re trying to impress early on in the relationship.
He keeps a closer eye when risks seem higher

Men in love are often rather protective of their partners. They become particularly interested in protecting the relationship when they sense outside interest. Sure, they might not talk about it. But they usually find ways to schedule more time together or stay nearby at social events.
Don’t mistake it for jealousy, though. A guy who’s in love will be subtly protective, not possessive.
He lowers his voice around you without noticing

You may have noticed that a guy’s tone changes in the middle of a conversation. His pitch usually drops just a little when he’s around someone he loves, and it’s a habit that’s as much instinct as it is comfort.
A lower tone tends to sound warmer & calmer. While men don’t always plan to lower their voice, they’ll do so when they’re around the person who matters to them the most.
He enlists friends for quiet “coalitional” support

A guy’s friends matter. Sometimes his closest friends will know much more about a relationship than he lets on. Men who are deeply in love will try to involve their social circle by checking in or perhaps helping with surprises.
They might count on their friends during rough patches. Essentially, he has allies to help him work out relationship issues because he cares about fixing the relationship. You wouldn’t do that with someone you don’t care about, would you?
He cuts the flashy peacocking in public

The majority of single guys will posture in public. They’ll show off their skills & stories, even raise their volume when talking. Not guys in love.
Once they’re in love, they start to lose the need or desire to show off, and men in solid relationships have more internal focus than external performance. They’d rather maintain the bond. Competing for attention just isn’t interesting, so you’ll see a guy like this behave differently.
He logs more shared hours during fertile windows

Most men don’t consciously track their partner’s fertility schedule. Yet research shows that guys usually spend more time near their partner when the chances of conception are higher, and they might also be slightly more available.
They’ll show more attention & make more plans. Only a guy who’s deeply in love will keep an eye on fertility in such a way.
He cuts his gaze time on “alternatives” without thinking about it

It’s natural that a guy narrows his attention when he’s emotionally locked in. He doesn’t scan the room like he used to. He doesn’t even linger on the faces that used to catch his attention before.
It may not be a conscious rule, but it’s automatic. His casual curiosity towards other people fades because he’s just not interested in other options. Why would he be?
He dials back heavy drinking

Men who are in love may still drink. But they might start swapping late nights for quiet evenings in, and they may also drink less.
Guys in serious relationships tend to drink less because of their partner’s influence, but also because they really don’t want to feel horrible the next day. They care about their relationship. They don’t want to do anything that would jeopardize it.
He starts booking checkups he used to postpone

It sounds strange. But guys in stable relationships often take better care of their health, whether that’s by booking important dental appointments or checkups at the doctor’s.
They may not openly talk about it. However, guys in love will follow through because having a partner seems to make boring chores finally feel like they’re worth doing.
He syncs his sleep to yours, even if it costs him a bit

Guys with a love that runs deep will change their sleep schedule. Bedtime becomes a joint routine.
Previously, he might’ve been someone who scrolled until late at night, but now, he’ll close the laptop earlier so you can both turn in together. The pattern of shared alarms & synced mornings seems to stick.
He dials down everyday risk-taking

A man who’s deeply in love with his partner loses the urge to take random risks. He may no longer want to be impulsive & he stops thinking that recklessness pays off.
That’s not to say that he’s become entirely cautious. Rather, he values stability more than adrenaline because he’s in a relationship that actually matters.
Sources: Please see here for a complete listing of all sources that were consulted in the preparation of this article.
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