Fling

So recently I’ve met this guy well I’ve talked to him before but not like this. Anyways we get along really well and agreed on having a little fling and nothing else, but he’s messing with other females and I don’t know how to feel about that. He’ll tell me straight up he’s going somewhere with a female but I kind of get a little jealous n idk why tbh I think this is the first fling I’ve had😬😬 please help

What if he gets upset I’m messing around with someone else???