At 20yo, around the time his dad was dying (relevant I think) he had his first serious relationship. The got really serious really quickly, which bothered me at the time, but not really my business and I was caring for terminally ill DH. It was a very unhealthy relationship, he dropped all his friends, spent all his money, felt real stress if he didn't respond to messages instantly, seemed to be constantly in fear of upsetting her/losing her. I felt helpless because I could see how harmful it was, but pointing that out was a source of great friction and frankly we had enough problems. It doesn't take a psychiatrist to work out why he became so reliant on her at that time though.
Anyway after about 18 months they were about to rent a flat together, had even paid a holding deposit, when they decided to split.
Previously whenever they fell out I'd had him sobbing in my bed! This time, he assured me he was fine, they'd just realised they didn't get on as well as they thought they did. All was well for a couple of weeks, then ex and her parents turned up at his work screaming blue murder that he'd been cheating with a colleague. They were all batshit, whether it was true or not, police had to be called and they were banned from the complex where he worked. DS has always maintained that wasn't true, they were mates, colleagues who got a long.
However, six months later he told me he and the woman in question were now dating.
They've just celebrated their "six month" anniversary. Is that a thing young people do? There were lots of gifts and a special night out. I work he still has a OTT idea of what normal in a realtonship.
Anyway, it would have been about 6 months from when he told me they were together, and when she started staying at ours occasionally. It would have been exactly a year since he split with the previous GF.
It's his business, but I don't like being lied to and I don't like the idea that my son is a cheat.
I also worry about the intensity of all these relationships, to the exclusion of all else. This one seems slightly more healthy, she has maintained other friendships, but he's never got his old ones back and has no other interests 😪