If his plans involve "traveling the world" just one word of advice. If/when this comes to divorce, get everything in concrete assets. You won't be able, for instance, to count on him to pay spousal support if he's in another country, so get a lump sum settlement instead, if that's something you would qualify for. Or take house equity instead of alimony, that kind of thing. And work on getting your own finances in order, getting a raise or better job if you'll need one without his income. Basically plan your financial future as if he's already gone. It won't hurt you if he does decide to come to his senses, and it will definitely protect you if he one day follows through on his MLC fantasies.
Also, if you haven't done so already, run a credit check on you and on him to make sure he hasn't run up debt that you could be held responsible for.
