It seems to me that when you've reached the stage of life where your children are eligible for AARP, all your grandchildren are married, and some of your great-grandchildren have their own Web sites, you should find a term other than boyfriend for the guy with whom you're hooking up, hanging out, going steady, or whatever.
When you reach the age of 80, you can can stop calling your partner "boyfriend", but "manfriend". 
mnli hypothesis: When you reach the age of 80, you can can stop calling your partner "boyfriend", but "manfriend".  premise: It seems to me that when you've reached the stage of life where your children are eligible for AARP, all your grandchildren are married, and some of your great-grandchildren have their own Web sites, you should find a term other than boyfriend for the guy with whom you're hooking up, hanging out, going steady, or whatever.