My longterm partner with early-onset vascular dementia moved to assisted living after I could no longer take full-time care of him, which I did for years. After a few months at the new place, another resident who does not have dementia approached him repeatedly and offered help with making a phone call (something my partner can no longer do), etc. Long story short, they are now having a sexual relationship and I am very emotionally hurt. I still love my partner but I can’t stand the idea that another woman took advantage of his situation (he used to love and adore me and I never had to worry about him being unfaithful). He told me today that he prefers being with her and is OK with never seeing me again. Although part of me understands, I am still devastated. How do I get over this? Luckily he has a son who is willing to take over all responsibilities for him, so I am literally free to walk away forever, but I’m still so hurt. Any advice/thoughts? Thanks in advance.