Sounds like Rusty had a problem at work. Don't know if he went to adult sites or not; some online poker sites aren't too great that way, can lead to all the nasties you mention.

I noticed that it looks like you tied your self esteem to his bad behavior and having a bad day. That shouldn't have much to do with you. I'd try to talk to him and, if you're in charge of the computer or if it's yours, I'd put in some site blocks, etc. with passwords. I don't know if you work or what your interests are, etc. but I wouldn't put up with bad behavior like that.