Is my boyfriend being weird?

So we’ve been dating for a few months now and we’re doing okay but there are a few things that he does that makes me uneasy. I’m not sure if i’m overreacting so I came here to share my concerns. So we are long distance but we see each other at least once a month. He lives in a very small town and I live in a big town. On social media i’ve noticed that he still follows ex talking stages or girls he’s told me have tried to get with him. He is a very good looking guy and gets lots of female attention. But I questioned him why he still follows these girls who he doesn’t have any relationship with anymore. His reasons were “We ended on good terms” or “I don’t wanna cause issues for me at school”. I’m like what but okay whatever. Also one of his ex talking stages that he almost ended up dating follows him on her main AND spam account. I don’t think he follows her back but still it seems a bit odd to me. Please let me know how you see this situation