Hey guys. Well, last night I went out with my friends and some crazy shit happened. There I was with three friends and a group of guys that I didn't really knew when a friend (girl) of one my friends arrived with two other beautiful girls. I tried to hit on one of the girls but then a friend of hers arrived and they kept talking all through the night and I realized she wasn't interested in me. There was another girl that was sitting in the sidewalk and one of my friends was hitting on her, but she didn't care about him and he went out of things to say. I then realized that she was looking to me all the time, and I started a conversation. We talked for some time and then I sat besides her in the sidewalk. We talked a little more and she said "It's too cold (or too noisy, or too boring, or too crowded, something like that) here". I said "Yeah, let's go for a walk".
We went for a walk and I put my arm in her shoulder. Then she started kissing me and we kissed for a long time. We walked a little more and sat in the street. She said she had three piercings. I said "Besides the one in the nose, where are the two others?". She said she had one in one place that I don't remember and another one in her nipple (yeah I only remember about the one in her nipple hehehehehe

), but she didn't let me see the piercing in her nipple.
We walked to another place and as we kissed more and more she sat in my lap. What was making me perplexed was the fact that my cock wasn't getting hard! She even grabbed my hand and put in her ass, and it remained flat. It only got a little harder (just a little) when I started kissing her nipple. She then unzipped my pants and started doing a handjob in me (yeah she was freaking crazy). Still it wouldn't get hard! In my mind I was thinking "I wonder if I'm gay, what the hell is going on?". It started getting a little hard but then as some people were passing by she stopped. She tried again but it was flat, what the hell! We then kissed some more and went back to the place where our friends where, where we talked a little more and kissed.
I don't understand. I hadn't fapped for 13 days and I tought this would make me get hard faster and cum fast. I don't know if this is related anyway. Has this ever happened to you? What do you think happened for me? By the way, this is not common, normally it gets hard fast... especially if a girl is sitting in my lap or if I'm with my hand in her ass.