My boyfriend joked about hitting on other girls, what does that mean?

Anonymous
I know he meant it to be funny, but my last boyfriend cheated on me so I was shocked. I didn't want to overreact though, so I didn't say anything.

We've been a couple for only a month now, so it's really hard for me to tell why he said something like that. Also I don't know if I should bring it up again that it bothered me, I mean I clearly know that he was just joking, still I'm scared that I might be wrong. =(
Updates
+1 y
Ok, he called me to tell me that he was just joking. He said that he sometimes forgets that I can be a little sensitive despite being very beat-up and funny most of the time. He promised not to make such jokes again...wow.
Updates
+1 y
So thanks everyone, but I guess, if he keeps his promise, the matter resolved itself.
My boyfriend joked about hitting on other girls, what does that mean?
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