Yep, my xh left the first time in a fit of anger, was gone 3 days came back, went on an overseas holiday w/me and wanted to purchase me a more expensive engagement ring, all the while suffering from his crisis.

I would suggest that you follow his lead for now as he is just one confused man. Enjoy the gifts because he may very well stop doing so if you begin to question him. Accept him for who he is today, tomorrow may be another issue.

Sit quietly, the answers will reveal themselves when you least expect them to.
The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.