Did he think I like him for saying that?

Anonymous
My friend (guy) has this friend (girl) who contacted me for work. She was interested in that position so I explained her what working there is like and all the benefits it came with. She got my number from my friend who gave it to her with my permission, and when we talked she introduced herself as his friend. I, jokingly, introduced myself as his girlfriend. It was a joke (well, and a little provocation tbh) and I thought I'd tell her I was joking at the end of the conversation, but I didn't.

When I finished talking with her, I told my friend about what we talked. I also said to him that I made a little joke with her. He didn't ask what joke it was, so I didn't tell him. I figured if she would say anything to him, I'd explain him it was a joke.

It turns out that she stopped contacting him. He noticed this and asked her what was going on. She said she had stopped contacting him because I had said to her that I'm his girlfriend. He denied this. He said to her I'm just his friend.

Today he told me he had talked with her. He asked why did I introduce myself as his girlfriend. I said I only made a little joke. Then he got mad, called me immature, and called my joke as inappropriate.

I don't understand why he would take it that bad. Did he think I like him for saying that?
Did he think I like him for saying that?
2 Opinion