Tell me what you think

Okay so I have been in this back and forth situationship with my bd for about 10 years now. When I was pregnant with our youngest back in 2019 I had found out he was sleeping with another girl… me finding out I freaked and went straight to the dr to get tested, I was about 6months. Of course he was telling me I was over reacting and I didn’t need to get checked. He slept with her unprotected because she told him she couldn’t have anymore kids. Mind you, he met her on instagram and was lying to me about working all this overtime to go out of town to see her. Needless to say, results came back and I was positive for chlamydia. She gave it to him and he came back home and gave it to me. Fast forward to now, 4 years later.. I find out he has went out of his way to follower her back on IG. How would you feel? Am I the only one that would feel like that’s even disrespectful to our son? Y’all.. I just idk