I'm sorry, you seem to have less than half of the story. I'm still mourning the death of my boyfriend and I don't even know that I like girls like that. In Kat's mind, that somehow translated into "ZOMG LET'S GET MARRIED RIGHT AWAY!"
I thought that she had moved on when she was being all happy with you. You were able to get through to her despite me telling her basically the same thing for weeks. Sure, I was hurt, but I was happy that she was finally seeing the error of her ways. I turned her down more than once. I had no idea she was thinking that she was just going to go for both of us, especially when I had established that I wasn't even interested.
What happened is that apparently, you can't tell her that she is beautiful without her falling all over you. Especially once she actually believes it. Last I knew, you could platonically tell a person that they are aesthetically pleasing. I guess that I was wrong.
I'm not a factor, JR. I never was. What Kat did was horrible, and I'm sorry for the part that I had in it. Albeit, completely unintentional. I never meat to come between you, and I wasn't trying to.