How to Do It They have about one second to decide whether they want to see me again. Photo illustration by Slate. Photo by Pressmaster/Getty Images Plus.  How to Do It is Slate’s sex advice column.  Have a question?  Send it to Stoya and Rich here.  It’s anonymous! Dear How to Do It, My wife and I are two months away from finalizing our divorce after almost 30 years of marriage. When we were dating and first married, our sex life was typical of youngsters in love. I was a very good, confident lover. I had an issue with premature ejaculation after a couple minutes, but I would retain my erection after orgasm and once the hypersensitivity wore off after 20 seconds or so could go right back at it and last 20 minutes or so. There was lots of opportunity to try different rhythms, strokes, positions etc. Within a couple years she started withdrawing sexually. Sex became infrequent although she would still initiate occasionally and would be enthusiastic when we did have it.…