Dear Amy: I’m a man in my 30′s. I’d gone on a couple of dates with “Stan” before he left for a four-month trip. We had sex both times. He was sweet, romantic, and we got along well.

When he got back, we started dating again and he said he didn’t want to have sex for a while because he believed he was a sex addict.

He started going to 12-step meetings. His rules about sex kept changing – first it was no sex for 90 days, then he changed that to some sex acts were OK, but not others.

About three weeks in, we had a really lovely, romantic overnight date and he left to meet a friend for coffee. The next day he told me they had sex.

Since we hadn’t agreed to be exclusive, I overlooked it.

A month later, I had to fly to my hometown because my dad, who had dementia, had stopped eating and drinking. He was taken off fluids but hung on for nearly three weeks before he died. I was away for a month and was at the nursing home 12 hours a day. It was devastating.

Halfway through, Stan called to confess that he’d hooked up with someone on Craigslist (after I hadn’t answered a midnight text about how much he missed me), that he’d also been naked-cuddling with a neighbor because of loneliness and “his addiction” — and he was sorry but couldn’t promise it wouldn’t happen again. I told him we would talk when I got back.

Now I’ve gotten back to my apartment to find it full of wilted apology flowers and candy (he had a key).

I don’t want this relationship to continue because I’m too emotionally exhausted for his guilt and drama – but am I being insensitive to his self-diagnosed condition? After all, we hadn’t agreed to be exclusive.

Is sex addiction, especially if self-diagnosed, a get-out-of-jail-free card for cheating?

– Wondering

Dear Wondering: Regarding “Stan’s” behavior – according to you, you two weren’t exclusive, so his self-professed addictive sex-seeking behavior isn’t really “cheating.”

But at this point (I ask rhetorically), who cares about Stan’s motivations?

I think it would be a good idea for you to focus less on Stan’s behavior, and more on what you want in a relationship. Did Stan show up for you emotionally or through simple and sincere friendship behavior when you were at your dying father’s bedside? No – he didn’t.

You don’t have to decide whether Stan is actually an addict (or simply enjoys hooking up) in order to decide that you don’t want to be with him.

In this case, Stan’s behavior puts you (and his other partners) at some risk. Get tested, change the locks, and focus on friendships and partners whose behavior and values align more closely with your own.

You can email Amy Dickinson at [email protected] or send a letter to Ask Amy, P.O. Box 194, Freeville, NY 13068.