How long since you last felt 'in the zone' with someone?

I can't say I've actually felt like this for a very long time. It truly is the 'pure unobtainium' experience. Trying to think about how it's supposed to feel just seems completely foreign.

I've had two LTR's (last one ended 3 yrs ago) but never been married. So I cannot comment on whether it's supposed to feel any different when you're 'in the zone' as married (or engaged to be married) vs just a standard romantic relationship.