Should I be concerned at all?

[♥;chloe]

If i was you, i would advise your partner to delete her off his online things. Remember to advise though, Because telling him could make him angry as he may think your dictating his life. It sounds to me , even though this girl treated him awfully, it was her first true love. And most people remain really attached to their first loves, sometimes this attachment does not affect the person. But when they see something that triggers a thought of them, memories come flooding in & that may be why she's trying to contact him. She's curious. The best bet is try not to get involved, if you do your partner may think your jealous. Just put it to the back of your mind - Oh and remember, if he still had feelings for her he would be with her. But he's not he's with you!