When was the last time you felt guilt about something, as in that emotional pit you noticeably feel in your stomach when you have done something wrong towards someone?

Sorry, I didn't realize it's not the same in English. :) It's when you live together with someone but you are not married. You are both registered on the address and usually own the apartment or house together.

I hope OC clears this up because my understanding is that's the Spanish equivalent of the n word