Jealousy

so I'm on a trip with my boyfriend and his uncle's family. however, his uncle met us up there so his wife was in the car with us. the whole way there they were talking, no dull moment in their conversations. I don't know if I'm just overreacting but I feel like he gets along so much better with her. the things he talked about with her, he's never brought up with me and the fact that she doesn't get along with her husband at the moment doesn't make me feel better...