TLDR: 21 year old me brought home a girl and got to fuck for the 1st time and i couldn't get hard. What do i do so that i get hard in the future?

Full Story:

  • be me
  • be 21
  • out partying. smoked weed and drank alcohol
  • grab girl at bar
  • walk with her to car and drive her to my home
  • at home clothes start coming off
  • i can't get erect
  • i eat her out for a bit
  • all i got going on is a quarter chub.

I don't thinking i was drinking too much since i was able to drive after. I don't think not fapping or watching porn for a week will help since at the time this happened I hadn't watched porn nor fapped in 3 weeks. I think I'm too young to take viagra. Help me figure out how i can get hard?