Why would a guy with a girlfriend be jealous of another woman talking to a guy?

[Venus-Aphroditex]

This guy cheated with me a couple of years ago. We had sex once while he's been in a relationship. (it's bad I know) I usually see him where he works because he works at a store that I go to. A couple of months ago when he saw me talking to another guy (his coworker) he came over to where we were and interrupted our conversation. He overheard this guy name Rick (his coworker) telling me that he had done something fun. And then he came over and stood between us saying (how was it?) I don't know why he would do this.

Today when I saw him I told him I got a job working at a museum. And I told him I wasn't sure about it because it's really classy and elegant. And then he said I'm classy and elegant.

[Bmories99]

I agree with another answer hear, he is jealous and wants to keep you around as a side piece or on the hook for when his other relationship implodes.

[Anonymous]

His answer should be obvious. I have no idea why you can't see that.

[Venus-Aphroditex]

What do you mean by his answer should be obvious?

[spartan55]

You just recycle the same shit over and over. So stupid?

[Wise4myage]

Why are you engaging him when you know he's in a relationship?

[Venus-Aphroditex]

I was minding my own business talking to someone else and when he saw me he came by saying hello.

[Wise4myage]

Is he still in a relationship?

[Venus-Aphroditex]

I think so.

[Wise4myage]

Then you are engaging him too.

[Venus-Aphroditex]

I was talking to another guy.

[spartan55]

@Wise4myage
Nothing is ever her fault dude, trust me. She has zero shame.

[spartan55]

@asker
What were you doing at the store in the first place? How is he engaging you when YOU offered him a massage?

[Wise4myage]

@spartan55 I agree, lol.

[Marshymallow]

He wants to keep you as his side piece

[In_Trance]

This is a you problem

[In_Trance]

I don't think he would

[Venus-Aphroditex]

You don't think he would? You obviously didn't read the question otherwise you wouldn't have posted this comment.

[In_Trance]

Yes, yes I read it