<human>: I've been seeing this guy for about a month and everything was going really well, we're not officially gf/bf or anything, mind you. We've hung out about 3-4 times a week since we started seeing each other. 
This past week, though, I went on a trip to Vegas with a friend. I kept up communication with him consistently. On Wednesday or Thursday he told me he was at a bar with a mutual friend, this bar is usually a sausage fest and I mentioned that casually and he said that "actually, [he] got a girls number". 
Now, despite me being a bit jealous, I am aware that he's not my boyfriend and thus I have no real claim for not wanting him to talk to anyone else (we haven't had the exclusivity talk, i'm not talking to anyone else, but Idk if he is), so I told him that getting the number was nice for him, you know, like a statement on his attractiveness, or something close to that. 
He started describing the girl and I was kinda nonchalant about it because I don't want to be that girl that is all jealous when he's technically not mine.
He got upset and said that maybe we should stop talking before someone gets hurt. He knows I really like him and I explained that I shouldn't be jealous, logically speaking, and he just ignored me the rest of that night.
The next morning, he apologized and said he was just drunk and didn't know what he was saying, so we dropped it and moved on, albeit awkwardly for a few hours. 

I got back in town yesterday and we hung out and everything was like that incident never happened, but should I bring it up and talk it through? I don't know why he was so upset that he didn't make me obviously jealous, should I have told him something like "why are you talking to other girls"? I honestly don't know what the heck he meant by trying to make me jealous.

Can you provide a brief rundown of the text in within 3 sentences?
<bot>: guy i'm talking to tried to make me jealous, but we're not official so I figured he's free to do what he wants, he got upset I wasn't jealous...why though?