My ex and I stayed very good friends long after breaking it off as a couple. He then met a lovely woman who he ended up marrying; this woman is friendly with me as well.
So I was present at their wedding reception and standing near the front when he stood up to give a speech before cutting the cake, with his new wife at his side. He went on about how wonderful it was to be surrounded by good friends and family, and added, "We are so sorry that Raintree's dad couldn't be here as he would have been very proud." The bride spoke up, "You mean MY dad!" Of course, the groom was mortified at his blunder but everyone laughed and made a joke of it and it was all good. The bride made some joking comment about, "It's ok, I'll let him have it later." She really was a good sport and I am so glad he found such a good person who was able to laugh it off.