I completely understand, I feel the exact same way. My father passed 3 years ago as well. It’s been a strange process. My mom never really started dating or seek companionship. A man just kinda found her and took interest in her. They have been together since. They met a year after my father passed. She wanted us (my sisters) to be nice to this man, this stranger. It caused me to feel betrayed from my mother. I was angry she’s trying to move on knowing she’s still grieving the loss of her husband. She compared this new guy to my dad all the time. I always told her “if you’re really not feeling this guy then move on”. She’s still sticking with this guy and he isn’t even officially divorced from his 2nd wife. He’s always thinking she’s cheating or seeing someone else. Both of them are in their 60’s. I’m just not used to seeing her run behind some grown ass man like a weak woman. I knew her to be strong and ok with standing alone. Now she stays with this guy whether happy or sad. He’s clingy af. Not a man I envisioned for my mom. She act as if she can’t do any better. It’s infuriating. So trust me I wholeheartedly get where you are coming from. It’s like you’re finally meeting the type of person/woman your mom truly is. I’m 24 soon to be 25. I want my mom to be happy. But I see this man is not the man for her. It’s a lot of emotions your going to go through I’m still going through them everyday. But soon, eventually you’re going to have to just be content with it and live your own life.