Ouch! Singer Calvin Harris dumps Rita Ora publicly via Twitter

After about a year of dating singer, Rita Ora and DJ Calvin Harris have ended their relationship. And Rita, like the rest of us found out about the end of her relationship via Twitter after Calvin announced it without even telling her he was done with her.

While Rita was doing interviews and talking about how much they love each other and trying to make their long distance relationship work, Calvin was spotted out and about with different women. When the media started talking about Calvin's secret trysts, the Scottish DJ decided to come clean and let the world know he's a single man again...only he forgot to let Rita in on it.

"Rita was left embarrassed when he tweeted that it was all over. She didn't think he was going to make the announcement, so she was shocked. It was Calvin's decision to end the relationship. They had been arguing for months and had grown apart" a source told The Sun

 See his Tweet after the cut...