Cat Problems

I have got this cat for like 5 years now and a lot of people think she is cute. But to be honest, I think she is ugly AF. And she isn’t a cuddly cat…all she does is meow and puke everywhere. Anyways, a few days ago I had some friends over and they slept over. One of them had brought his bag full clothes with him to change or whatever. When I woke up in the morning I noticed the cat had puked all over his bag and his clothes. I quickly cleaned most of it with water and he didn’t really notice and I never told him. I kinda feel guilty about it. I don’t know if I should tell him