Ex is friends with my new guy.
When I was in my early twenties, I had a five year relationship. It was probably the happiest I have ever been with anyone. We talked marriage, but I don't want kids and was scared to make that type of commitment. He did want children, and though he wasn't ready at that point, I knew someday that could be an major issue for us.
We eventually hit a really rocky point. He moved with me when I got into a grad program in another state. I was stressed out from school, we were fighting a lot, and basically I kind of took him for granted. Instead of working on the relationship I put emphasis on school and shut down emotionally when he attempted to work through our problems. He ended up leaving me and is the only person to ever completely, utterly break my heart.
He moved away, and though we talked a few times, it was too hard for me to remain friends. I told him I needed to cut contact and we didn't talk for 9 years.
Unbeknownst to me, he moved back into my area a couple of years ago. We ran into each other, started talking, and hung out pretty consistently for about a month. I still had feelings for him, but seeing how different we now were from each other I saw that realistically we would not be compatible as a couple. Regardless, after a few drinks one night we ended up sleeping together. I had recently broken up with my boyfriend, and I think it was a misguided reaction to being newly single.
I kind of freaked out and left his house right after. We texted back and forth a few times after, but never hung out again. Now we basically communicate only via facebook comments...in which we are friendly but impersonal.
Four months later, I am dating someone new and it is going well. Last night, I found out that my new guy is actually good friends with my ex. He asked me about our prior relationship, but we were out with a group of people and I didn't have a good opportunity to tell him that we had hooked up more recently.
I feel like I should tell him this, but I am unsure how to bring it up, or if I should talk to my ex about the issue first. I believe my ex has reunited with someone he dated before and my new guy is friends with her as well. From the time line, it sounds like they may have got together fairly soon after we had a our little on night fling, and they may even have been talking at the time. I don't want to cause any drama.