Dear Amy: My42-year-old cousin is in a serious relationship with a 52-year-old man. She recently learned that he told her child's 23-year-old baby sitter his sexual feelings for her. My cousin has forgiven him based on his confession that he is a sex addict and promises to get help.

She is invited to Thanksgiving at my home, and I know she will ask to bring him. I believe this man will cheat on her again, and I do not want him at my home. What would you do?

Amy says: You certainly have the right to deny anyone access to your home, but I don't think "I believe your guy is going to cheat on you" is a valid reason.

If she asks if she can bring this guy, you should say, "I don't like or trust him and I don't want to expose our family members to him." Prepare for her to choose to stay away.

Staying with someone because he is a sex addict is a new one (even for me). Down the line, your cousin will need some family support.

No description needed

Dear Amy: I am a single, straight woman in a deep but nonsexual and nonromantic relationship with a single gay man. We share living space and spend much of our free time together, including with each other's families. Whenever I introduce him to someone, I have a hard time explaining who he is to me without going into detail.

Can you help me find the right words?

Amy says: I don't think we should put so much pressure on ourselves to describe complicated relationships in order for every single person to understand exactly what's going on the instant he or she meets someone. One pleasure of getting to know people is the slow unfolding of understanding: "Oh, you two are like 'Will and Grace.' " Introducing each other using only your names is fine at the outset.

I'm sure readers will want to weigh in.

Send questions via e-mail to Amy Dickinson at askamy@tribune.com.