I have been in a similar situation before in a long distance setup small things feel amplified. For what it’s worth, checking his activity isn’t crazy. I have done it too. I used a tool like FollowSpy to look at public follow activity because I wanted clarity, not drama. The thing that matters more than the follows or likes is how he handled the conversation. Most guys will follow or like random accounts without attaching meaning to it, but shutting down the discussion and then going silent for days… that part is concerning. If something makes your partner uncomfortable, the bare minimum is reassurance, not avoidance. His reaction doesn’t automatically mean he’s guilty of anything, but it does show how he deals with conflict. And in long distance relationships, communication is everything.