Guys, y would my lover get jealous after hearing?

that a girl he knows is now hooking up with a bf?





When he 1st heard about it, i just thought it was a surprised kinda behaviour. But then he started to stress, getting all wound up, and made a familiar jealous face (believe me, i kno when he's jealous, cuz he does it with me). Even the other party that was there couldnt help but notice it, and told me so afterwards that they thought the same: he was jealous.





I always thought that mayb he had cheated on me with her in the past, and i even confronted him about it. He says he didnt. So what is up with the jealous reaction?

Guys, y would my lover get jealous after hearing?
Does he know the guy this girl is dating, does he dislike him if so maybe its the boy himself! or maybe he just good friends with this girl and knows what this guy is like and dont want to see her get hurt, i know its easy to say he might actually fancy this girl, but he might actually just be worried for this girl. does he talk to you about his problems? maybe he just thinks its something he cant talk to you about. hope it helps.