Between you and your partner, who's more likely to be first to apologize after a fight?

When we were new as a couple, it was always my husband who apologizes regardless whose fault. But on the latter part of the marriage, almost no one would initiate anymore. I always try to patch things up but it's really not my nature to apologize by saying sorry. I initiate the conversation and admit my fault but you would hardly here the line, "I'm sorry."