I agree on honesty, and certainly one has to have discretion with past loves - talk about it so they know who it was, but certain details don't need to be disclosed.

I didn't realize the 2nd benefit of accountability, but that is so true! I will often tell my husband when I'm going to try a diet or some new routine, and he rarely has to remind me or help me. Just the fact I've told him helps me make it happen!