So about 2 years ago I met a girl at work, she was 27 and I was 25. one thing led to another and next thing I know we are dating. she told me she had a 3 year old son but I never really paid it much attention, I just wanted to see her. Since we worked in different departments I didn't see her all that much at work so most nights I would drive down to spend time with her. I never asked about her son or anything of that matter. When we went out to dinner or movies she always hired a babysitter and tried to prevent me from meeting her son until she knew our relationship was a for sure thing. We talked about it more and more and came to the conclusion that I was ok with her having a child from a previous relationship and if I commit to the relationship then I would be another father figure for the boy. Well eventually one day after about 6 months of dating I drive down to see her and she decides it's time for me to meet her son. Everything went well he was shy and mostly just sat in the car seat while we drove around talking. After that night she pretty much brought him anywhere we went and we always focused on doing things that were fun for him (parks, McDonald's play place) but The more I saw him the more I realized how annoyed I got of him. He will Literally will cry and moan for any little thing he wants. And if she doesn't give it to him he will just keep going. Just the sound of his cries makes me want to pull my ears off my head. Anyways, She'll spank him once and he starts crying but she quickly apologizes tto him and starts kissing him and hugging him and telling him she's sorry for hitting him blah blah blah. I feel like he doesn't learn any lesson that way, but what do I know I'm not a parent. Well I just kept putting up with it thinking it would get better and eventually I moved into her apartment . Now almost 2 years later I cannot stand the sight of her son. The constant bugging when we are trying to watch a movie and he keeps coming out of the room trying to get his moms attention. She even told me it's because I'm there holding her and kissing her so her son gets jealous and tries to intervene. She says when I leave for the gym or to visit some friends for a few hours her son is well behaved and stays in his room and doesn't bug her, but as soon as I get home he is all over her. I always thought I liked kids until I met him. I feel so shitty for it but now I dread going home after work knowing he's there playing with his toys and making noise. I know it sounds bad but just the sight of him makes me grind my teeth. As soon as his biological father picks him up on the weekend I jump in joy. The 2 days that he is gone feel like heaven. I know this can't go on, as much as I love my gf and our relationship I just can't do it anymore. My biggest fear is breaking up with her and leaving her heartbroken although I know she will get over it much quicker than myself. Also the longer I stay the harder I feel it will be in the future. I just don't know how to end it. Things have been so good between us that I wouldn't even know how to bring it up in a conversation. I've never dumped anyone besides girls in high school and things like that. I definitely don't want to tell her it's because of her son.