Sexual tension with coworker

So I started at this workplace 2 years ago. The guy in question already worked there. We hit it off right away. We work in different departments, but we chat a few times a week when we run into each other. Always say hi when we pass each other. I find him very, very attractive. I was single when I started, then got into a relationship. I recently became single again and now I feel like the sexual tension is off the charts. I’m positive it’s a mutual feeling but neither of us have acted on it at all.

I found out a while back that he was in a relationship but it was apparently really rocky and on/off. He hasn’t talked about it with me but I’ve heard from other people he works next to. I’ve noticed lately that he keeps seeking me out and is chatting with me more frequently and for longer than usual. I’m not sure if he is currently still in a relationship or not but I won’t make any kind of move until I know that he’s not. But the tension is absolutely killing me and I don’t know what to do. I’ve tried forgetting about it but I can’t. I don’t even want a relationship. We have a lot of common interests but I know we have very different political views. I really just want to sleep with him 😅. What do I do?