The letter was from a 60-year-old woman whose "gentleman friend" shows less affection than she wishes he would. The columnist casually suggested that he might be asexual. No long explaination, no big to do. Just "This gentlemen may be...asexual..."
I really liked that- not treating it as freakish or really different. Just a fact- the guy might be A. I really like it when people do that!