I'm 51 and have 3 adult kids still living at home, a Son age 25 and 2 Daughters aged 22 and 20. I split with their Dad 18 years ago and have been a single parent for over 10 years. I love all my kids, but have always had a close bond with my Son. Our relationship has deteriorated a bit over the last 4 years as he has been with a girl who he dumped his previous girlfriend for. Long story short, I poked my nose in, and haven't had anything to do with his new girlfriend in all this time. They broke up 3 times in the first 2 years and she treated him like dirt. My Son and I have still got on, but he's lived a virtual double life, keeping his life with her separate to his life at home. He's told me today that they are moving into a house together this week, and I am devastated. They've been hoping to do it for some time and it's not because of anything at home, he just feels it's time. I bitterly regret how things have been the past 4 years, I only ever wanted what's best for him, and it hurt me how his girlfriend used to treat him. I don't know how he's going to manage financially, as he's only started working again after losing his previous job during lockdown. He has no savings, and owes me a substantial amount of money he borrowed to learn to drive and buy his first car. I barely see him as it is, as he is either at work, with her, or up in his room, but I know I am rarely going to see him once he leaves. I doubt I will be invited to see his house, or asked for help, or to visit, and I can't say I blame them really. This is not how I wanted things to turn out. I always assumed I'd be there to help when my kids moved out, to help decorate, buy furniture etc, but this girl will not want me involved. She has manipulated things from the start, when she made a play for him, knowing full well he was in a relationship, down to driving a wedge between me and him. I'm just gutted I'm losing him and can't stop crying.