How to Do It

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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 husband and I are in our early 50s and have been together for 35 years. We have three grown children ranging in age from 30 to 25. We have decided to open up (we’ll be swinging together) and have some fun. We have read the books, listened to podcasts, and have been very honest with each other, and we are very excited. Here is our problem.

We met as teenagers and were virgins when we got together. We have only ever been with each other. Our worry is HPV. We have built zero immunity from other sex partners. I have read that the cutoff for the vaccine is 47. I don’t mind paying out of pocket for the vaccine, but how does one go about this?…