This has happened to me several times, as I had like 9 girlfriends x_x
The worst time was like 4 years ago, when I got a text from my at the time girlfriend, at around 2am or so I think, saying she broke up with me ... at 2AM! Thru a text message, we had not been together for long, but seriously, if you gone break up with someone, do it face to face ._.