Are you essentially telling us if you didn't get the fwap out of your system over your cousin, you would've done a lot worse over/with/to her/her tits? (delete as applicable) 
I absolutely would have grabbed them. There was no denying that. That was in the queue from like 3-10.
She lives out of state, ffs. I would have napalmed that bridge with the

like you wouldn't believe.
So, with all the information out there. The fact that I made it through the evening, and then jerked off in the dark makes me kinda like a f***ing gentleman.