I agree with Anita. It’s appalling that he didn’t at least offer to pay you back, even just a little at a time, for the mattress that you had to go buy AND the fact that he seems like it should be no big deal and that you should’ve just brushed it off basically without apology or him trying to make it up to you.  This is bigger than him just peeing on a mattress and you “overracting.”  This is a lack of respect and decency on his part and shows how irresponsible he is. He didn’t show you any understanding at all, even after he sobered up.  I get what it’s like to not be able to afford to replace things, but there are other ways to make it up… run errands for you, do extra chores to make things easier on you for a while, do a few extra jobs to make spare money or sell some things and then pay you back. He should have apologized very sincerely. He put zero effort into any of that and instead complained to his friends who, of course, all agreed because they are probably alcoholics as well.

I feel like you’re feeling bad right now because it’s essentially a new break up, you dated for 2 years so you have an attachment to this man, and it’s going to take some time for you to detach, and that process always feels pretty bad. After that, though, you’ll likely view this situation clearly and be thankful it ended.