This is deifinitely tough but you do deserve more. I am all for saving marriages and would hope H can come to his senses, but the way things are going now, you just can't and shouldn't stand for.
I understand alot about getting married young - same situation for me - 5 years together, in my career, etc and I was ready to move on the the next step. I thought H was too but I was obviously wrong. I don't know if I could have just sat around dating him for another 5 years while he grew up, but on his part, it was too young to get married.
I think you are doing the right thing - just sticking with your guns. If he can truely come around, then great, but he just can't keep trying to prolong this b/c he doesn't want to have to sacrifice anything. You and OW are mutual exclusive, so he needs to pick one, and unfortunately it sounds like he choose her (what a sad life he has in front of him). Like you said, you've been dealing with this for a long time now, so for you to set an deadline, especially given the circumstances, is not unreasonable. Yes, this choice is the "end all", but really, did he honestly expect you to put up with this forever? You deserve more! But it's good that you have a plan in place now for his stuff, etc. This is super tough, but just keep the strength up to do what is right.
Easter pics sound really cute. Unfortunately, if this is the path H is chosing, he doesn't deserve any pics on the wall!
Me 27; H 28; S 2 Togeth 9; M 4 Sep 11/14/08 EA OW1 Sep 08 EA OW2 Mar 09 EA OW3 Jun 10