i dont know what to do, im getting sick of the freaking guys that hang out with my girfriend, every day there are at least 5 or 6 that always try to flirt with her, telling her that she is really pretty or if she has a boyfriend and asking her out <_<. She just giggles, and tell them that she knows how beautiful is she (she has a reeeeeeeally big selfsteem) and contiinue talking with this friends of her, she likes to receive this kinds of proposals and compliments, and playing around with this is fun to her.

She is so pretty, cute and little, and funny as hell, thats why i liked her in first place and why im her boyfriend, and i understand that others guys can see how awesome is her, but i hate this :/

What can i do? i feel very uncomfortable with random guys and friends of her telling her thats she is hot or flirting with her. :(

Well you can tell some to just back-off.

She may get annoyed and feel like you're being overprotective, though.

Well the last thing you want to do is tell her to stop. That will only make it worse. You could approach the guys one by one and scare them.

Start hanging out with other chicks.

Subconsciously, we all have very primal animal instincts.
Show your woman you're the alpha male.

But one thing you should not do, is act like a bitch and say, "I don't feel comfortable when you hang out with him.... " or "What's so great about those guys...."

Just step back, and act like the whole thing doesn't mean shit to you.
She'll see you in a different light and you'll get laid.

It's that simple.

yeah thats why i dont do it, i dont want her to think im jealous or something, besides, some of them are her "friends" (well more like guys that begin a friendship just to try to seduce her)  and if just tell them to back of she is gonna hate me :(

lolwut

Fuck her best friend in retaliation.

lol, yeah well recently i gott laid :D *hig five*

well i hang out with other chicks but i dont get that kind of feedback, im cute and girls huge me and tell me that, but im just not that... hot, girls dont see me like a dream, tall, tan, strong with big abs, im just a normal dude.

fixed!, sorry not native speaker xD

Looks aren't as vital as you think. It's all about persona act like an alpha male! You are the boss, and they will be fawning over you.

Who says normal dudes can't be total pimps?

Trust me, you'll be doing the right thing if you don't let it affect you.

I hate it because the same thing happens to every man. 

(It gets better as you age)

But it's just the woman's way of trying to exhibit some sort of control.

Don't fall into that power struggle.

I would advise to get around her "male friends" and just basically grab that ass.
And if they try to talk down to you, what do you care?

You're the one having sex at the end of the night and they're left jerking off into a tissue.