I am the FWB for a married woman whose husband can’t have sex anymore after his car accident

The husband got in a car accident a few years ago and got a bad pelvic injury, so he can no longer have sex.

So twice a month for about the last 2.5 years, he leaves the house for a couple hours and I take care of his wife. They’re a really nice couple. They’re only late 20s too. At first it was a bit uncomfortable and the situation was pretty sad, but over the years we’ve all gotten to be really close friends so I think this has worked out well for everyone involved.

We also hang out some weekends.