I'm definitely not ready for the kids to meet the OW yet. I don't even know if she's "safe" to be around. There is a difference, though. The OW was an OW during our marriage. I had no OM, I just now have a BF.
It's not the time yet to introduce BF to the kids, and when I do it will be as a friend. While my D7 knows his name, I have lots of friends who are men so it won't be too weird in that respect. Three of my good friends, with whom I do things weekly, are men and my kids have met all three. They have also met their wives, though they know I do stuff with them without their wives. (I'm kind of a tomboy. I play volleyball and do bar trivia and monthly beer tasting with these guys.) So I don't think the first meeting would be too weird. I don't think BF would want to be holding my hand or anything around them.
I'm thinking maybe we could go to a Cal or Stanford football game all together. Hmm. That's a thought. I don't want it to be during an important date for them. I thought about bringing them to a soccer game, but then STBX would be there and it would be weird. Not to mention BF would only be able to meet the one who wasn't playing.
Me: 42/H: 37 T: 10 years/M: 8 D9, S8 Bomb: 7.23.07 Separated: 1.20.08 D Final 3.19.09 Affair started in '05, found out parts in 11/07. They married 11.26.09