Withdrawls

Often times, men withdraw because they need to deal with their emotions privately before expressing them. Drawing back into their own space is just allowing them to establish a sense of self in a relationship that probably has them excited.
It isn’t fair to expect men to experience the same emotional energy that we might feel about having sex. If you push it onto your guy he might feel like he is losing his freedom thus making it harder to work and focus.
The emotional closeness we naturally feel after having sex may feel unnatural to him. But that does not mean he does not care.
Freedom and Individuality Matter to Him

Men want to experience freedom and individuality in a relationship. Often times, if a man tells you that he is not ready to commit what he really means is that he is afraid of being drawn to you- that he is, in fact, attracted to you.
Now that doesn’t mean you bust out your night vision goggles.
But you also do not have to live in fear. Being a man is different than being a woman- that is why you were attracted to him in the first place! As counter-intuitive as it seems, freedom is only a threat to you if you don’t let him have his space.
If your man is a decent human being who has shown interest and delight in you previously, he is probably just giving himself space after such an intense and conjoining act.

In fact, there is quite a bit of research and evidence that explain why when men get too attached they feel uneasy or uncomfortable. As men bond with women a hormone called oxytocin is secreted.
In women, it lowers their stress level and helps them bond with their lovers and their babies. However, in men it actually lowers their testosterone and raises their stress level.
The closeness of sex, in the long run, can stress out the man more than the woman in a purely chemical sense. Therefore, if he is really attracted to you, he might need some time to cope with his feelings.
If your relationship is strong, a little lull won’t hurt it. If the guy you once thought was a Prince Charming turns out to be a dud, it’s better to let him swim away and resolve in choosing better next time. Remember that you deserve someone who loves you for who you are- and your man deserves the same.