Can anyone answer this pls?

let me start by describing myself, im a very jealous type of guy, now, im currently courting a girl,and i think we are already on a mutual understanding stage... now if i found out that she's been going on a movie date with another guy should i have a right to get mad and ignore her, or am i just making a fool out of myself??? also ive been jealous because she told me she met a guy who's nice, straightforward stuffs like that, but immediately said that there's a huge problem because that guy is not Me... what do you think she's trying to put up??? also any advice on what should i do? much appreciated!!!