Probably stupid

So, I recently reached out to my ex boyfriend. I had been hanging out with some of his friends and they told me some pretty rough things, and I honestly just wanted to check on him.

He tells me he's doing okay (he's definitely at a low point, but not terrible) and we caught up a bit.

Let me rewind to our relationship...

We were together for only 10 months, but man our chemistry was amazing. We loved the same things, and we introduced each other to things we are still in love with today (like Chris Stapleton 😍). We had our own house, picked out a ring, I was going to be with this man for forever.

Well, I went on a trip with my college choir that lasted a week. We had been arguing for about a week before that because I mentioned that maybe we moved a little too fast and I thought maybe I should move out. He thought I meant I was leaving him, and I tried to assure him that I wasn't, but he was so upset about it and I decided to stay. During my week away, we had been talking a bit about my decision and he seemed really off...I kept asking if he was okay and he said he was, but that he wanted to talk when I got home, so that was scary. Well when I did, I came home to a party he had thrown for me and I thought all was well.

Well it wasn't.

I was leaving to go get some drinks for my girlfriends, and they told me they saw my boyfriend flirting with one of our other friends. Well I was upset, but didn't think a whole lot of it until I got a call from my cousin a week later telling me that girl had told him she slept with my boyfriend while I was gone. I was FURIOUS.... asked him once and he lied to me so I packed my shit and left. I was so heartbroken and man I was AT MY LOWEST. I had to move back to my hometown and leave school... I was in a very rough place.

Now I'm great, I have a salary job and I'm paying back my college so I can go again. I can hold my own for sure and that's something I would've never been able to say two years ago.

Fast forward to now:

We reconnected and talked a bit. We went out to lunch and of course clicked like we always had. HE FINALLY ADMITTED THAT HE CHEATED!!! And surprisingly I wasn't upset. He was so sad and told me he regretted it so I told him the past is the past and I'm doing great now.

Theeeeeen we slept together.

WHYYYYYYYY?!?!

I was a little nervous but surprisingly, there were no feelings there for him.... I mean.

The sex was great. Always had been.

I haven't asked him how he felt but he made some comments that make me sure he isn't looking for anything further.

Is this going to hurt me in the long run? After all the progress I've made for myself, am I just erasing it by making myself open for any kind of relationship with him?