The “new” woman

So my current boyfriend is in the middle of a divorce. They were together for 11 years and he found out in February that she was cheating on him on top of other problems they were already having. Him and I didn’t start talking just as friends until May so I am not the reason for the divorce and we were set up by a mutual friend after he saw me at an event and told the friend “who is that I have to know who she is”. He says he’s grateful for me and as bad as it sounds grateful things are over with her because it led him to me because we have so much in common and he knows I will never give up on him even when things are hard. He does live 4 hours away (we haven’t gone more than 7 days without seeing each other since we met) but is planning on moving to where I live by next spring once he finds a job. He says he loves me and that I’m “marriage material” all of the time. He has never given me a reason to doubt his feelings but in the back of my mind I’m so afraid he’s going to change his mind or find someone else there (even though he’s told me numerous times he doesn’t want anyone but me and loves me more than I can imagine). I do struggle with depression pretty bad and it causes me to over think everything with us because my last relationship was abusive mentally and physically( which he knows about). Has anyone ever been in the situation of being the woman after a divorce and want advice can you give me? The divorce should be finalized next month and I’m hoping that is going to but me at some ease until he moves down here. Thank you in advance for the advice and I’m sorry for such a long post! Lol