Dear Abby: Woman must pick right time to reveal she can’t have kids

[...] if nothing is mentioned before, when you are becoming intimate and the subject of birth control is raised would be a logical time to speak up. Many of my friends live in the suburbs within commuting distance. Several of them commute daily, and there are many mass transit options running throughout the night. On a few occasions we have planned an outing in the city and, after the tickets are purchased, etc., one of them (“Carla”) has casually stated, “I may need to spend the night at your house since it’ll be late when we get back.” How do I respond when she invites herself to spend the night? I have the room, but it’s still a hassle having someone stay overnight. The words to use are: “I would prefer that you don’t stay over because I’m really not comfortable having overnight guests.” [...] if she continues to suggest she wants to stay with you, stop inviting her to nighttime events. What bugs me is the invasive question I don’t feel I should have to answer, usually asked by people whose parents helped them buy a house. Dear Mom: Because your daughter lives with you and you are paying the bills, she should have enough respect for you to do as you ask.