It is half past eleven on a Tuesday. The dishes are done, the dog has been let out, the last text from work has been answered. Your partner reaches for your hand on the sofa and you flinch — a small flinch, the kind you might not have caught a year ago, but now you both notice. They withdraw their hand. You don't say anything. They don't say anything. You watch the rest of the programme with eight inches of cushion between you that wasn't there last month.

Later, in bed, you both pretend to be tired. They turn their back. You turn yours. And in the dark, two people who love each other run two completely different stories about what is happening.

Your story: I'm broken. It's happened three times now. If I try and it doesn't work again I'll feel even worse. Better not to try.

Their story: He doesn't fancy me any more. Maybe it's the weight I've put on. Maybe he's met someone. Maybe he's just stopped loving me and doesn't know how to say it.

Neither of you is correct. And the misunderstanding between your two stories can, over time, do more damage to your relationship than the original problem ever did.

I see this in clinic almost every week. A couple comes in — sometimes only the man at first, sometimes both — and what brings them is rarely just an erection problem. It is the silence around the erection problem. It is six months of avoidance dressed up as tiredness. It is one partner reading the other's withdrawal as rejection, and the other reading the partner's anxious questions as pressure. It is two people who used to talk about everything and now cannot find the words for this one thing.

This page is for both of you. It is written for the man whose body is no longer reliably doing what it used to do, and it is written for the partner who has been trying to interpret his silence and getting more frightened every week. The clinical name for what you're going through is erectile dysfunction. The name for what is happening to your relationship is something different — and that is what this page is mostly about.

If you want a fast clinical guide to why erections fail in partnered situations specifically, that is on a separate page: why your erections fail with someone you care about. This one is about what the failure does to the two of you.

ED in a relationship is rarely one person's problem