How to Do It is Slate’s sex advice column. Have a question? Send it to Jessica and Rich here . It’s anonymous!

Dear How to Do It,

My sister is in between living situations after getting laid off. I have allowed her to stay with me until she gets back on her feet.

The problem is that she is getting laid. Excessively. She brings home a different guy almost every other day. Often, I will wake up in the morning to find her latest fling staying for breakfast. Ordinarily, I wouldn’t care what she does in her spare time. I would be fine if this were a steady boyfriend whom I knew, but these men are strangers to me, and I don’t feel particularly comfortable having them in my home.

Bringing this up with my sister has resulted in her becoming furious and hurling accusations at

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