I'm sorry to hear about your hard times, it seems everyone you speak with these days is suffering somehow.
Back in the early 90's when i hit the job...
I agree with most of the replies so far.. He's comfy with you because you are TOWING THE LINE.. he's obviously starting a new life with a new person...
If you are asking the question you already have your answer. It's time to let go.
without detail it's hard to advise on how to cut the cord, but things...
I don't believe in infidelity AT ALL.. Once you make that decision to bed someone else you can stay at that house because you aren't coming home.. so...