He is into either girl for what she fulfills for him specifically, and to that extent, he is into either one of them at one time.

It is possible for a guy to look to two girls as equally important to him in reference to what they do for him individually.

One girl is game to do any activity he is into, including guy-centric activities such as playing sports with him, which makes her a girl that is like one of the boys.

The other girl is quintessentially feminine, looks really pretty on his arm at a social event, and boosts his social credentials as a result.

These are two girls that fulfill specific needs that he wants in someone he is dating, and accordingly, he is into the two girls at one time.

If you are in a situation where you like a guy who is into you and a different girl, think about what this guy tells you that he loves about you.

That is the reason why he is into you.

Now, think about what he has told you that you are lacking, or has insinuated that you are lacking.

The other girl fulfills what you lack.

That is how he makes sense out of being into two girls at one time.

Although it is difficult for you to wrap your head around a guy who is capable of creating this kind of separation, there are quite a few guys who are exceedingly good at it.

These are guys that are skilled at compartmentalizing.

He knows each girl’s individual value to him and decides to be with the two, and by so doing, he gets to eat his cake and have it to.

This is behavior that is pervasive in men who sleep around or are players.

Players are supremely capable of compartmentalizing.

Every girl on his roster fulfills a specific need, and to that end, he deems each one of them valuable.

Although you are all about being with the one guy that fulfills you emotionally and physically, a guy that is capable of being into two girls at one time isn’t anywhere near as romantic as you are at heart.

Biologically, he is wired to be with as many women as he can have, and his emotions for each individual woman doesn’t go much further than the excitement they elicit in him whenever they are fulfilling a specific need he wants from them.

This behavior persists until he is blindsided by a special woman who has suddenly put him in an emotional rollercoaster, where almost every waking hour is filled with thoughts of her.

In this case, he chooses this girl over any other girl he was into at the same time.

It’s not that he can’t continue being into a different girl at one time, it is more so that he is fearful of losing this special woman, should she discover that he is into this second girl.

It is only when he has met a woman that he fears losing that he stops himself from being into this alternate girl.

This said, there are loads of guys who are into one girl at a time.

Ordinarily, these are the guys who don’t sleep around, have fewer date options, and are historically more relationship-minded.