My female friend (we kinda fucked a few years ago) just got her degree and took me out to celebrate.

The moment we entered the club she started indulging herself in alcohol and started dirty dancing with me. I knew what's up but decided to have some fun. We danced, flirted, and I felt good and manly. After club she offered me to sleep at her place since night busses were not driving yet, and I took her offer.

She said she is too tired to make me other bed so we can just sleep in hers. Again, I knew what is up but decided to have some fun. I just wanted to fuck something and go to sleep.

She did that annoying female crap, denied my advances while shivering from excitement, and we ended up having sex. First time in my life I made a girl scream.

Today I feel empty as fuck. I know telling my gf would be stupid, but I feel the burden. GF is better in every way then her and I just cringe when I remember last night.

I have a ton of missed opportunities with women and didn't want to regret not fucking her some day, yet I feel empty and retarded. Is there some standard protocol in this situation? I would break up instantly if my gf did this to me, yet I did it to her. What to do boys