Search Results: pretty or hot

Long story short, my boyfriend has cheated in the past and we are working through it/he is earning my trust back. (We’ve been together 7 years, started dating in high school and now through college). I don’t have the passwords to any of his accounts, but his Twitter was still logged in on my phone (mine is usually logged in) and I got a notification on his side about a suspicious login and when I clicked it automatically opened. The details of the login aren’t relevant, but I noticed he had blocked some accounts where he hadn’t had any blocked before. One of them being a girl he cheated on me with before we got back together 5 years ago. He would have had to have done this pretty recently. My question is, why is he still searching up and blocking exes? I feel like I need to talk to him about this, as it really worries me considering how shady he has been acting lately. (Always has his phone on him, carries it to the bathroom, leaves the room a lot, isn’t present with me often anymore, weirdly hot and cold to an extreme - but I also read depressed men can show these signs too so I don’t know). Although the two could be unrelated, I’m unsure. Whenever I try to talk to him about most anything, he automatically gets defensive and shuts down and doesn’t seem to listen. What should I do? Am I overreacting? What are your thoughts? Thanks in advance.