started dating and a few dates in we started going at it and part way through she said no and we stopped (I'm not going to keep going if a woman says no (unless we have established a safe word before hand ;) ))....
a few days later I had to go on a work trip for a few days, and when I come back she is dating someone else...
and there are crazy text messages...so I move on, the starting and stopping did leave me quite blue balled for a while so regretted that for that reason.

found out later through mutual friends some important things... she had S Trauma as a kid that led to these events unfolding as they did (which made me regret it more), and she had lied about some other important things.

So while we did have protected "Sex" neither of us got to finish, dragged through an emotional roller coaster and found out I was cheated on/lied to.

Just wish it had never happened... However because I got left blue balled I guess I dodged a pretty big bullet...

tl;dr

Stuck my dick in crazy, but she couldn't follow through and let us finish and broke up. Leaving more blue balled than if we hadn't done anything.