I'm 23 and have been dating a wonderful girl for about 2.5 years now. She's good to me, family loves her, I love her family, but lately I've been feeling freaked out about us lately. Simply put I feel too young to be this emotionally involved. I feel we're on the road to marriage (possibly not any time soon, but on our way) and there's too much I haven't done or experienced. All my buddies are out chasing tail and having fun and I feel like an old married guy. I just feel too young to be in this situation. She doesn't actively keep me down or anything but the fact that we're so comfortable with each other the motivation to go out and hit the town isn't there. We stay in a lot. I hit the bar last night with friends and was flirting with a girl. It was all squared away and exhilerating but because I could never do that to my GF I pulled the girlfriend card during the kiss/hug goodbye and ran away. Sucked, but I couldn't do that to my girlfriend. If the GF and I were dating maybe 8 years from now, it'd be great, but at this age I feel restless. Further I don't feel it'd be healthy to sweep these feelings under the rug now only to have them explode later in life when I'm married and reflecting upon missed experiences/opportunities as a young man. She loves me so much and is so invested I feel like such an asshole for having these thoughts and don't want to hurt her, but I don't know what to do.