Guy friend you’ve known for a while says would you and him ever go on a date, he asks jokingly?

[Anonymous]

Guy friend randomly asks me if I would go on a date with him. For context, my girl best friend is his roommate has a crush on him and was hoping that moving in with him would seal the deal for her. I don’t think it’s going anywhere with them. I genuinely was never interested in him as she already told me her intentions with said guy friend.
He’s in front of other people made jokes about me being his ‘girl’ and I just never paid it any serious attention. Just thought he was being a guy and annoying.

He asked me about going on a date when my girl best friend who likes him (his roommate) was sitting right next to him. When I said no she said ‘see told you’ ask if she knew he was going to ask me that. And he said “what you would have a great time” and I said no again and he said “oh well I would definitely change your mind”.

Just want to understand why would he do that when he knows my best friend really likes him.

[spartan55]

I've read this five times and still can't make any sense out of it.

[Asker]

Okay what’s confusing?

[spartan55]

Okay how does the dude know she likes him?

[Asker]

Because they moved in together, they usually hang out and go partying together. What else would he assume? Honest question, I just don’t know what else he would think.

[spartan55]

Unless she told him directly he wouldn't know.

[Asker]

Got it thank you

[spartan55]

Why wouldn't she have told him by now?

[Asker]

Honestly I don’t know. I’m know she’s been flirting but I’m not sure how he’s not getting the hints.

[MisterWack]

If he meant it jokingly, I would assume jokingly.

[loveladies1]

Maybe he's too dense to know she likes him and he has a crush on you!

[In_Trance]

This was no joke