I think you know what you need to do. I'm a firm believer that sometimes people stay in a bad situation because its easier to stay then to start over. I don't judge him because of the kids, but because of all the other baggage he's bringing. ask yourself do you want to deal with this for the rest of your life? Do you wanna have kids and bring them into this? Ultimately it's your decision, but don't base it upon, the dress is brought, invites sent out and his family loves me and I love them. Ask yourself are you happy? Do you see better for you? Good luck in whatever path you choose.