Since he's been back at uni this month he has been posting pictures of her and videos of their nights out, mainly on his private story - i don't mind him hanging out with her but it's really starting to make me overthink and i thought out of respect he wouldn't post another girl. I don't know if i am being silly, overthinking and being insecure basically. I'm really just trying to tell myself they're close friends. I trust him i really do but not her. Do i have a right to tell him this upsets me or am i just overthinking this and being "psycho" , i don't want to push him away and make him feel like i don't trust him or like he can't post what he wants or go out with her etc. What would you suggest to do?
Sorry for the long winded post and TIA :)