One thing I’m sure is that he has absolutely no intention in ever getting close with her again (she truly betrayed him and his trust), so that’s something I’m not worried about… but this 13 years…is just not something I would be ready to wait for our relationship to be…public and that we could live together than. If this would be heading in some serious direction.

The thing is with intentions… they aren’t always what happens. He may not have intentions in the present, but a lot of change and growth can occur in a person in 13 years, and he will be right there with her to witness all of it. The feeling of betrayal tends to get less over time, especially if they are on good speaking terms and continue to make new positive memories/experiences. I’m not saying he’d go back with her either, but what I am saying is it’s much more likely for them to fall back together when they’re living with each other than it would be if they weren’t.

Also, are you the first one he’s dated since they split or have their been others, and has she seemed jealous in any way if there were others?

It certainly is a tricky situation, and only you can decide what’s right for you. But just know there are a lot of other guys out there who treat their ladies with respect and care, so I would think carefully about the emotional turmoil you might experience from this guy years down the road, when you’re tired of living apart and ready for the next step in your relationship, but you can’t get there because he told you right from the beginning that he will be living with his ex-wife for the next 13 years. If you think you’ll get to a point where this will be too much for you to deal with, it might be better to look elsewhere for someone else who will show you the same level of respect and care. They’re out there.