Honestly, I don't even want to get into the story, and you don't want to read a wall of text. I know what I have to do, but I know right now I lack the strength. I thought posting here and saying it out loud in some means would help me out. I love her, but I know after tonight I can't trust her. I love her kid, but I know I can't continue the same way in his life when his mother makes choices like this. I don't want her in my life anymore and i have to do this. I don't know what I expect for posting this, but it feels better having written it. I hope your life finds you in a better place than mine.

EDIT: to make it clear, we did break up at one point but are back together now. She refers to herself as my girlfriend, we spend almost everyday together. We have trips to our families planned this year. We're affectionate and physical. We talk about how we both really like how we have progressed, where we are going, the future is as bright as it's ever been sort of things. Looking at houses together, talking about what we want to do for her son as he gets older.

Also, she told me this morning that she didn't text me back at 11:00 because her phone died and since she wasn't feeling well she got home at 11:30 and passed out.

Last thing which is throwing me off. She is still friends with his sister in law, who he lives with. (yeah). So when I saw her car at his house last night, the weird thing is his truck wasn't there. She told me earlier she might hang out with her but said that the other guy was out of town for the weekend so that's why she might actually hang out with her.

Telling me she spent the night with her would obviously make me suspicious when (if nothing really happened) it's easier to avoid an unneeded argument if she was honest and faithful. She works in a male dominated industry and making friends who are girls has been hard for her, and I know they really got along. She says she doesn't hang out with her anymore because of her proximity to the other guy, maybe she had a chance to hang out without the risk of him being around. Yes I know how I sound, yes it looks like I'm justifying, but the more I think about his vehicle not being there the weirder it is.