Slightly different scenario, but I was away with my daughter recently and my husband sent me perfectly cheerful texts the whole time I was away, yet when I came back I found out he has actually been quite poorly - nothing life endangering but pretty much bed-bound.
I asked him why he hadn't mentioned it and he said, what was the point, he knew I would just have worried/felt bad, and he didn't want anything to stop me enjoying my time away.
(He did reassure me that, had it had been serious enough to warrant me ending the trip early, of course he would have said something.... But as it wasn't, the only impact would have been to stress me out slightly.....)
It made me think actually - I too, like OP's husband, am probably guilty of moaning on to my partner about things over text when he is away with friends, not because I expect him to do something, but just because it is my habit to vent to him. But actually, unless it's essential and I actually need his help with it, I am going to try my hardest not to do it from now on, as I really appreciated him keeping his illness to himself (I know that sounds bad - hopefully it is clear how I mean it).
OP, to give your fella the benefit of the doubt, possibly he doesn't realise he is ruining your night. Explain it to him calmly and compassionately, and if he STILL does it after that - that's when you know you have a problem.