He may feel that he needs a change to feel that he's getting a fresh start.
He may want to trap you or entice you with the house.
He may have guilt and wants to give the kids more.
It's not a good idea to make big decisions during times of questioning. They suggest waiting a year on many decisions.
Don't get trapped by a new house if you think that you may want out of the M. It will be confusing for the kids as well....to move as a family and then have to leave the new house they get so excited about.
Are you in counseling? Maybe you should start there, either invididually or together, or both. You need to find yourself in order to figure out if you can accept what happened and move on together from it. That's just my opinion.
I am assuming you will be able to sell your current house and at least break even? Because for many people that is NOT the case.
Is it possible you could RENT another home? That would prevent you from any new long-term commitments with your WH. In fact, it might even be more desirable in any scenario because D without property is easier than D with property.
Full disclosure, I did buy another home when WH and I were early in R, even left a rental to do it. But our sitch was different, we absolutely needed to get out of the rental for reasons unrelated to our marriage, renting in the school district we wanted to move to was not an option, and the home we bought was purchased greatly under the resale value in an area that is a seller's market (very unusual in our metro area and state), so even if we had to sell at any time we would profit from it. I wouldn't have purchased a home with him otherwise.
Moving is a busy time and that might take your mind off of things. That might help in the short term, but after you get settled, you still need to heal, so it sort of seems to me that will only delay your recovery.
I really wanted to get out of the marital home at first because it is a maintenance nightmare at times, and i feared it would be triggery for me. However, i decided to stay because my kids needed the safety and stability of their home. I'm glad i did. i definitely don't need the stress of relocating in addition to separation/divorce, and the triggers aren't really there. (i did get rid of the marital bed because i worried i couldn't sleep on it wondering what might have happened there...)
Sure there are some triggery moments, in the house. I also get pissed off occasionally at the mess she left behind, but i'm glad i stayed.
Also, from a practical matter, selling and buying a house isn't cheap. I'm not sure what your financial situation is, but for 'us' it would have chewed up all of our discretionary savings, and only led to more stress.
I feel conflicted as I really feel in my head that I am not going to be able to move past this A, but my heart is not listening, its saying, "but he is willing to move now.."
I wouldn't make any major decisions right now, because you absolutely cannot let emotion drive them. You can only really trust your head and your gut at this time...