So me and my boyfriend have been dating for nearly 4 months now and iv noticed ( and my house mate ) that he seems to ark up when another male come on the scene. An example, the other day we where playing basketball and me , my house mate and her man where sitting on the grass while he was shooting hoops, he started getting really cocky and telling my house mates bf to “ man up “ “ 1v1 me “ and just edging him on. My house mates man is a really chill guy and doesnt do competition type stuff so he just got up to play. Anyway my bfs mannerisms changed completely and to me it looked like he was trying to be really dominant or whatever towards the other guy. Does this mean he’s insecure ? What could I do to help him with it ?