Is it normal that i have had sex with my ex since we broke up?

I spent over 7 years in a relationship with someone who I was engaged to twice.

That relationship ended the day before I started the current chapter of my life. I ended up making friends for the first time in several years, when I had been utterly convinced I never would again and developed a crush on someone who is one of my biggest icons and muses.

The muse and I had casual sex a couple of times and I believe there was once a moment when they were into me as well, but relationships are just not on the cards for me. I've had casual sex with a few other people, most recently the ex. Some of this casual stuff was very much not consensual.

I've basically been all but put off sex now thanks to my last experience and have no idea whether what I've done is OK. I'm still trying to wrap my head around it I suppose. On one hand it was nice to be with someone familiar and he was better than I expected or remembered... but on the other, how the fresh hell do you tell someone you're interested in fucking and/or dating about something like that?

The ex is straight, vanilla, raised upon a rather toxic brand of evangelical Christianity. I and most of the people I've done it with are more sexually open and exploratory and either don't have that baggage or have different baggage.