Seeing Spouses of Sims without Using Ask if Single?

I knew a sim was married because it shows in their info panel but your sim doesn't. Once one of my sims was dating Bjorn. His wife Clara came to the bar and kissed his cheek. My sim went into a rage and slapped his face because he was married.She didn't have the jealous trait. I forgot to make her ask the question because I knew the answer. They don't react to spouses this way if you ask the question first.