DEAR ABBY: My 13-year-old son, "Wiley," was playing a game on my cellphone. I stupidly forgot to delete a short video of myself engaged in a sex act with my ex-husband, "Cliff." Wiley didn't confront me or mention it, but given his sudden change in behavior, I'm almost certain he saw it. The next morning I mentioned it and apologized, hoping we could get past the awkwardness, but Wiley wouldn't admit this is what's bothering him.