D5 already has her birthday 'invite' list (her bday is in December LOL) and OW's D is the first one on there. OW's H (if I decide to invite her) will bring her, I will make sure of that. But, really, he doesn't want to see MY H, so that might not be a good idea either. He has been peaceful up until now though. But, honestly, D5 will understand if I say "___ is not able to come" and move on, so I think I might do that.

If its on YOUR weekend, he better not freaking come. Heck, even if its your W's weekend, he still better not come!!! That is just wrong and of course, the day is about D3 and you have NO idea what your emotions will do with him there. I would stipulate that his ex bring them if they come at all. That's just ridiculous.