I know females can be wrong, but not every female is. Some females just hang with dudes because they just always have or understand the mind-set of males. If your lady is in to you (I'm sure she is), then trust her. If you start acting jealous that will for sure turn your lady off, which will just lead to bigger problems in the relationship. A woman can have male friends. If those male friends start to get frisky, being a proper woman she'll put a stop to it real quick. Just because dude wants to stab doesn’t mean she’ll let him. Having a full time dude and some side action is just way toooo much drama for a woman to deal with. Being in a relationship means trust. It might be hard for you to have a female as just a friend, but that doesn't mean your lady can't keep her relationships straight without blurring the lines. You're in a relationship, so then TRUST until she gives you a reason not to. You must be with her because she’s a proper woman, so then treat her like one. But just in case, make a point of meeting her male friends, just so they know you two a team.