I am not an expert, but those kinds of spending habits would be a concern to me. I do not know what to suggest, but perhaps an attorney would be of benefit to you. My guess is that you would be responsible for 1/2 the bills.
Me: 48 Ex-W: 45 M: Nov '96, together since Oct 93 Bomb: on 10-yr anni - Nov '06 OM Separated: mid-Feb '07 Divorced mid-July '08 One daughter - 28 XW living w/OM
