what did i do?

[wicked1mpulses]

this has to be one of the most painful things i've ever felt, it feels like someone is tearing my heart out. which, i suppose, is what's happened. i'm such a fucking basket case, i've used up like 5 boxes of tissues. i can't believe that someone that i have (had? i guess) such intense feelings for could be so cold.
what did i do wrong? was it something i said? he didn't explain in the text message, it's like he became a completely different person overnight.