Good afternoon. Earlier this morning when I was at at my college campus taking a class, then girl who was decently attractive just happened to sit by me. I've been on no fap for 16 days now. So were not talking with eachother or anything, but just that face she was sitting next to me and I could kinda feel her body heat ( not to sound creepy ) gave me an erection. I tried everything in my power to focus on the assignment but the thoughts and the sensation wouldn't go away. She wasn't wearing any revealing clothes, just sitting next to her caused this. Eventually a little bit of pre cum drippedout and I felt extremely terrible thinking I relapsed, I never made it this far before. I just came to my apartment, I didn't MO, or anything. Now penis is dead now. Is this a relapse right here because wasn't my dopamine being stimulated similar to porn. How can I avoid this in the future? Thanks guys.