AITA??

i don’t even know how to word this cuz this is kinda a weird ask… AITA? my ex started talking to someone & was super smitten with then less then 2 weeks ago. but the other day asks if i would be upset if he took our daughter to meet her son for a play date because now she’s seeing someone else & they’re “just friends” the thought of it makes me uncomfortable & makes me feel disrespected because we had agreed for her not to meet potential partners or anything until we knew they were going to be sticking around & personally i don’t trust that they’ll keep staying “just friends”. i also mentioned to him that it seemed kinda shady to me that she wanted our kids to meet but doesn’t want to meet me… if you’re just friends what’s the issue with meeting me? you should be fine with that & i think any mother would be weary of someone wanting to meet their kid but didn’t want to meet them? just gives an off vibe to me… he was just making me out to be the bad guy in the situation saying it’s just me being insecure & dramatic.. trying to make me feel guilty saying i’m ruining her chance to make another little friend around her age. AITA? Am i overthinking/ being over dramatic??