it depends on the type of person you are, or want to be. personally it would bother me. because if i were to have a girlfriend, i would want some one who only makes love when she is in love, or at least when she breaks down its to a real good friend, like me!. im not too much into chicks who will let strangers bone them at a party or a disco bathroom. thats just me though. is that you?
Well, first of all, how much do you trust the people who told you she did? Do they have some motivation to split your relationship? Could they have motives other than protecting you? It sounds like you've got some trust issues going on that you should definitely work out before you get too serious about this girl. If she says she didn't, she could be lying, but then again, she might not be. If she did, she may be ashamed of it and that may be why she's denying it. It's okay to be bothered (I would be, also), but if she did, you shouldn't feel threatened. If she has a history of messing around on guys, you might want to stay on your toes, though. And definitely watch out for STD's. If you are already or plan to be sexually active with her, suggest you both get tested for STD's. Be careful, and make sure to work out your trust issues.
Get to know your girl and form your own opinion. Give her the chance to make her own impresion on you.
learn to spell and use grammar. Trying to read your posts is like forcing your brain through a potato masher. as for your statement about women and friends, i say bullshit. Friends are just as likely to stab you in the back as women/men are if it serves their purpose.