Is it okay if a guy have a lot of close female friends when he's in a relationship?

I would say no, as long as he doesn't get too comfortable with them But I understand where you are coming from.

I have a lot of female friends and don’t see anything wrong with it because we are just friends and nothing more.

Should I be worried?

I know, it is just that I a crush on a guy who got way to close with girls, so I know the pain of seeing someone you like get close to a number of girls, while he just acts like there is nothing wrong.

I can understand that but does he act differently around you than he does with his friends

Should I be worried?

Its risky

and I doubt he'd be ok with you having male friends. so play him at his own game

Exactly, play a guy at his own game. Never fails.

That’s a bad idea for a number of reasons:
1. I’ve noticed that guys are clueless 98% of the time when it comes to things like these.
2. We feel friend zoned so often that we feel insecure about asking a girl out
3. Most of the time it seems as of the girl is interested in another guy which hurts for a little while but then we either accept it and move on or still hold those feelings and get hurt whenever talking to the girl so we tend to avoid her and sometimes try to make her feel jealous
4. Movies and T.V shows make us feel as if we either have to be complete strangers to the one we’re attracted to or be close friends and accept the reality that we are just friends.
5. We never feel right for the person we’re interested in and find every reason to not ask her out before doing so
6. We overthink the way we want ask someone up we normally give up
7. We normally look for a one on one opportunity to ask a girl out which never happens because girls are always in groups or crowded areas
8. Peer pressure gets to us. We feel as if our friends will make fun of us for asking a girl out or for being rejected( this happens more than you think)

And when they think they can hurt us and get away, and treat us like crap? Then what? What about our feelings? My feelings?

Of course its not OK for a guy to that i never said it was I was just trying to point out reasons why some guys have lots of girl friends. I'm sorry that your feelings have been hurt in such a way but some or most guys feel this way about a lot of girls. I was used by someone I became close to because she wanted to be friends with one of her other guy friends who had previously hurt her and made her feel like crap on numerous occasions. I'm not saying what guys do is right i'm just trying to show you this sort of thing goes both ways. I'ts clear the person that hurt you was very close to you but you shouldn't hold a grudge like this on every guy who comes into your life. If you would like to talk about this more just PM me.