I remember my stepmother use to talk about my mother and father and her 1st husband and she all meeting, if they had (my mother and her husband died about the same time) and how they probably would have been friends, they were that compatible.

My husband and I have a good guy friend who use to work for my husband and he and I hit it off and talk about deeper things than my husband cares for (my husband doesn't do "emotional" generally) and I sometimes imagine if my husband were to die, would I hook up with him, etc. (no, personally he has more flaws than I would like in a partner :-) He and I are only about 6 months apart in age but my husband is 7 years older.