No, my in-laws were supportive of the marriage. But my wife's behavior was just as bad, as were her statements of gloom about my chances. She told me "I'm DIVORCING YOU!" a bunch of times, and my intel turned up her saying that I made her "physically sick to my stomach," and "I will never, EVER stay married to him!"
It was pretty bad.
The biggest difference was, I wasn't nearly as REACTIVE as you are. I'm a guy that's slow to move, but once I move, I move FAST and DETERMINED, and I'm not going to let others' pessimism deter me. Once I decided to bust the affair and DB, I could more or less care less what others thought.. certainly not my wife, who I viewed (correctly) as addicted and hopeless in her current state.
