Dear Annie: I am 66, and my boyfriend is 71. I have been divorced for 16 years, and he has been a widower for 10 years. Our problem is his children. With my divorce, I receive spousal support for life as long as I do not marry. I have my own home, and so does my boyfriend. We go back and forth between our houses, but we each pay our own bills. My boyfriend promised his wife before she died that…