Ex sees kid Sundays and has them overnight every other weekend, today I asked what they'd done and was told they went to (womans name) house, it was a bit of a shock as nothing had been mentioned but I presumed she's a new GF being introduced, it hurt a bit but I kept quiet and didn't question them.
I've just put them to bed and DS (5) mentioned that youngest DS (3) and he shared a bed when they stayed at her house.
I've texted ex ' I would have thought you would let me know you had met someone before introducing them to our kids' and he texted back and said that they live together(?!).
I've never heard her mentioned before today, despite the boys telling me what they do with dad and he hasn't mentioned how long they've been together, We get on well (I thought) and he tells me what he's up to at work and life over a tea when he does pick ups. But this was never mentioned.
I'm absolutely reeling right now but I do not want quiz the boys or ring him because they will hear and I don't want to upset eldest by letting him know what he said has upset me.
I'm also unsure if I have any right to ask how long he's known her and when they started seeing each other?
Am I being unreasonable in feeling upset and wanting to know how long ?