It seems a lot to you. But that wasn’t your decision to make as a mother. It was hers. Because they are their children. That’s my point. Why did you feel the need to mention it? Your opinion on it is neither here nor there and she certainly, didn’t do anything she shouldn’t have done. Nor did she speak lies. That’s a very age appropriate thing she said. She didn’t need to lie to her child, to protect him from what he did. He did lie.
I am not trying to needle you. But all through your posts you are dripping in things that are entirely irrelevant and things you can know as fact, about her. How she acts, how she acts with him, choices she made as a parent and non of it changes anything. You not being happy, in your relationship isn’t her fault. She doesn’t know you exist. She parenting and coparenting as she does and as they have together, she has no idea there’s someone else to consider. It’s his job to consider you.
If he didn’t want to be in the relationship he could have left and not cheated on her. But he found it easier to cheat, disrespect and inflict extra pain on her, because he didn’t want to face breaking up and avoid conflict. So he made more conflict. Why was he there and cheating if he didn’t want to be with her?
Because that’s the pattern of his behaviour. He does what he wants and hides it from his partners, he causes more damage and more pain rather than deal with a difficult conversation or situation. So when you say ‘that was their relationship not ours’, that’s not true. Because he is displaying the same sort of behaviour that led to him cheating. He was half of that relationship and half of this one and still acting the same. So they are not unconnected.
I get you fell in love with him. But being in love doesn’t mean you have to be with someone. Especially if huge parts of their personality are things do not work for you. Especially when you know they are displaying poor behaviour that consistently leads them to do things, that make you feel unhappy. You must get something out of the parts of his personality, you claim to dislike or your feelings would have ebbed a lot earlier. Maybe for a while, it was nice to have someone who is a conflict free zone. Maybe it felt easier than your other relationships, but now you are waking up and realising that he achieves that by lying and deceiving.
I think you are trying a bit too hard to convince yourself that it’s not his fault. Or not mainly his. Or that it’s not such a big problem, because you are afraid of the end of a relationship. Not afraid of being without him. Lots of us have been there. Holding on when we know we shouldn’t because the alternative is a little intimidating.
I get you were just ‘popping round’ because it was for his kids or what not. But that’s an odd thing to do. You hadn’t met his children. But set off to his, to drop stuff before sending a quick text or call saying he had forgot the stuff and you are dropping it off. Before my dp met my kids or I had told them I was seeing someone, if dp had done that I would be pretty annoyed as it would raise questions. Who is that, why did he have food you bought for our house? Especially with kids 9 and up. They don’t miss things like this.
You may not be ready to admit it, but you did that for a reason. Either to try and make the kids aware of your existence (even if not as a partner) or because you suspected something. Maybe you should be a little more honest with yourself.