I hope your exW doesn't flip a lid. She's had a bf for over a year now right? So, she's allowed to do that and you're supposed to become a monk? If she flips the lid, i'd be tempted to laugh in her face. It doesn't make sense that she'd react poorly to it. But hey, BD and all of that didn't make sense either so this could very well happen.
I am more concerned about how your girls will react. They've not had to share you with anyone else so far, and now they will. We as adults know this is different, but kids don't see it that way. Your girls might see it as someone new that their dad is sharing love and affection with, whereas in the past it was only reserved for them. You might want to keep that in mind. Kids might not be able to articulate it that way, but they could get jealous or feel like they're not the priority now to you.
This is the main thing that I am going to have to figure out when I have a gf that I introduce to the kids. They will need to understand that the new person is not taking any love and affection away from them.
