How can I make sure not to be a cock block? Female here, I'll be visiting a straight male friend soon and I'll probably do it on my own. We used to be in a relationship, but that was long ago.

Still, I feel very often that I'm scaring away potential ons's of his at parties, etc., because we're still pretty close, have a lot of songs/drinking shit in common so well. He also doesn't really succeed with women on a romantical level which also makes me feel guilty because I had several relationships after him. So when I'm visiting him, I want to make sure I don't destroy his options in his new town. How can I show the world we're just fucking good friends by now?