Question: Am I over thinking or could this be a sign that we aren't going to make it??? I've been…

Question: Am I over thinking or could this be a sign that we aren't going to make it??? I've been really depressed all week. Yesterday my boyfriend and I had a fight and since then I feel worse than I ever have. I've struggled with my depression for a few years and it's getting worse. but the point of this post is that yes we both apologized for the fight and we talked and he said that we are still good and that we're still together and all but he's been really distant all day and has untagged himself from everything that I have ever tagged him in. and on top of all that the reason we had the argument is because he has a female friend that he hasn't talked to in a while and all day yesterday he was texting her non stop and sending pictures to each other. she's going through a divorce and they talked before she was married. I'm not sure what to think or do