The background is that ExH left me and my DSs a few months ago. Our original split was over a year ago when I caught him cheating but he refused to budge. He met his current ow last autumn (when still living with me) and started an EA which became physical once he left the family home.
The ow is married. She lives abroad with her h and kids. Her h got wind of the EA with my h and started divorce proceedings.
So they don't actually see each other very often yet they think that they're soulmates blah blah blah. My exH wants my DSs to meet her when she's next over. He's already started contact by encouraging my DSs so send her text messages.
I'm uncomfortable with them meeting her. I'm uncomfortable because I don't see her as a permanent feature in exhs life (he thinks she is as they text each other a gazillion times a day) but she lives abroad and while she wants to come live with him its unlikely she'll be able to bring her kids.
I'm also uncomfortable because she's the ow. While she wasn't the OWomen that caused the original split her EA with my h did have a huge impact at home. Exh has asked the DSs (6+5) whether they'd like her for their "new mum". (Took a while to reassure the DSs after that stupid conversation).
Sooo, would it be best to let her meet my DSs given that h expects her to be part of his life? Or should I say no until she's permanently over here? I want what's best for my DSs and I'm not sure if my resentment about being betrayed is clouding my judgement.