He can’t keep it up

So we hadn’t had sex in quite a while and we had sex last night, and again this morning. And both times he lost his erection... wouldn’t mind necessarily, I enjoyed the intimacy and think I showed him that. But I tried to talk to him about it and he didn’t want to open up. It’s never happened before in our nearly 3 years together.

He’s been smoking and drinking a bit more than usual but not that excessively I don’t think, which might have been it, and he’s been stressed because his jobs at risk because of COVID.

So I’m really hoping that it’s due to that, and it’s a temporary thing. But I don’t know how to get him to open up and tell me if there’s anything I can do...

Has anyone dealt with this before? Or has any tips?