From a womans point of view....a guy who lacks self-confidence might as well put a big sticker on his back that says "undateable". I have alot of guy friends too and I can tell u that I love my guy VERY much! He, too, can get alittle jealous (as us women like to call it) and I have to quickly remind him that if it wasn't him I wanted, I wouldn't be with him. Have u shared these concerns with her? If so and she has done nothing or said anything to help you see its u first then maybe her loyalties are alittle dismayed, and that can be an issue. But if she has told you she loves you and wants you and only you, give her the benefit of the doubt. You can't punish her for your insecruities because that will push her away. hang out with her and her guy friends. Watch the body language and behavior between them (with a biast eye) and see what you come up with. Maybe you're the one whos not ready for a relationship and need some " me help" before you can share yourself with someone else. There is nothing wrong with protecting yourself from being the next fool who didn't see it coming but you will NEVER have a meaningful relationship with insecruitiy issue....trust me....I have had a problem with it myself. I hope I have helped, even if just alittle.