I am on the same boat with you now.
I currently date a WL, i have been having sex with her everytime for the last 3-4 months. For me, she is really my type in appearance wise. A girl that i used to dream about in my wet dreams.
The last two occasions, i couldnt even came and she was upset by telling me i didnt enjoy the sex. For the past month, I can feel Johnny not as strong as he used to.
I went to see different girls, to see if its cos i had too much sex with her. But the girls like Claire, Angel from 278, Sigrid Dream girls, Mina 42G- fyi, the later one is the prettiest of all, couldnt wake Johnny to its max potential.
I am not saying its the girls, they are exceptionally good. But i think its just me.
I am now giving myself a week theraphy, by not punting or masturbating at all.