When to know he's crossing the line

My boyfriend and I have been together for 2 years now. I am currently a senior in high school and he's starting his freshman year in college. He's going to school an hour away and is a male cheerleader. He's been one since we've been together and does a lot of other activities so I'm pretty use to it. My problem is he is around girls most of the time and talks to some of them outside of cheer. I know he's aloud to talk to other people it's not that, it's just I hate when they talk to him too much. I know he'd never cheat or anything but I hate constantly seeing girls messaging him/tweeting him/ being on his snapchat favorites. It's not easy to see them having is attention. Where do I draw the line on this one ? Am I freaking for no reason or do I have a reason to not like it ?

You don't have to necessarily like it but you need to accept it totally to be 100% happy with it. Yes, he is allowed to talk to others but if he put you first and foremost all the time, then you wouldn't have a twinge of jealousy or doubt. As for girls constantly messaging and tweeting him, he allows this to happen because he has the power to block them if he wanted to....and the added attention obviously will happen when he's a male cheerleader. While you are used to it, as you state, going by your post, you've never really been comfortable with it. Discuss it with him and see what reaction you get from him. This will tell you whether you are freaking for no reason or you have a valid reason not to like it.