Is it wrong to fap to a possibility?

A friend I've had, a girl, known her since high school, and we've talked on and off for a long time. Mostly online, but we've hung out at bars a couple times, just friends. I get the feeling recently, especially from our last conversation that it might become more...i'm really hoping it might become more. I like talking with her so much, and I've always found her pretty. Is it wrong though, that this simple thought turns me on enough that I wanna fap to it?

wow.

you know, i'm probably one of the older guys on 4chan.

but back then when peopl and 12 year old kids didn't have internet access or the occasional porn mag, doing what you described WAS THE STANDARD.

no wonder you guys don't have imagination anymore. i used to make up scenarios in my head and then fap to them.