If I agree, we should start a new slate, try marriage counseling, and date without discussing relationship problems to see if we can connect.
There's something I don't like about this. I would agree that it's worth it to work on the marriage, but I would suggest not agreeing to terms like that without discussing it together with a MC (a good, pro-marriage MC or DB coach) and asking them what the best way to go about it is. It sounds to me like he's leaving himself an out somehow. Like...oh, we can't connect so the deal's off.
Seems to me it should be done with a commitment to the marriage and no pursuing others, transparency, etc. Connection after you've been married a while is different from connecting with people you've recently met. Expectations should be different, and understood. A C can help make sure everyone's on the same page.