Sexual Amnesia 

When immediately after sex you cannot remember why it was you decided to have sex with this person in the first place. Experienced more by men, but not exclusively. This is not a medical emergency as the symptoms typically fade within 24 hours at which time you want to have sex with that person again.

Seconds after sex...
Girl to Boy: Hey, that was amazing. You're so hot!
Boy to Girl: Who are you and how did I get here?
Girl to Boy: Oh no, bad case of Sexual Amnesia. Here's my number, call me tomorrow.

Sexual Amnesia by Duece79 June 4, 2018