Long time

I know it has been a long time. I have been busy with life and other stress. Well here it is. Have you every realized that once you have a love or girlfriend in your life all the old temptations come your way. I have had many opportunities to stray from my relationship in the past few months. There were some very good offers that I turned down. I still don't know if I did the right thing. Where are these girls when I am single and wanting to have fun? When I am single I want nothing more than to explore my sexuality with random new people. The thrill, feel, and uninhibited sex! Then when these things come around I turn them down because I have a girlfriend. Even though the sex with these people would be only sex, not love. They even know about the girlfriend and don't care. Some of the girls even have boyfriends and husbands of their own. My questions is this. I am turning down many good opportunities for nothing? Should I do what is good for me? How will it hurt my girlfriend if she never knows? Just strugglilng to find out what I should do......