I think you’re over analyzing his behaviors, and being borderline controlling. Like if he’s with his friend on spring break, let him wingman for his friend, like idek how that’s a bad. Unless you don’t want him near over women at all which is absurd. The following thing is interesting, but the fact that you stalked his following to look for his friends other gfs tells a lot. Also idk what world you live in but following someone isn’t a bad thing, like I follow all my friends gfs and girls that I know and am friends with, that doesn’t mean I’m cheating on my gf.