The Australian billionaire has reportedly called off his engagement to the 'Without You' hitmaker but it was only a short time ago that he shared his excitement about their upcoming wedding.
According to TMZ, the e-mail from James to Mariah read: "I'm in love with you and can't wait to get married and be together forever. There's a song I'm listening to now that's got lots of meanings and I hope it makes u smile. When you get caught between the moon and New York City best that you can do is fall in love. All my love, laughter, light, respect and appreciation and admiration ... Thank you my fiancee and soulmate. (sic)"
And Mariah reportedly never saw the split coming but understood that the pair had some problems to work through.
A source said previously: "She read the news in Woman's Day Australia that said he dumped her. Mariah knew they were having problems, but all relationships have issues - it wasn't the kind of thing where she thought she'd read in the paper that she got dumped ... She was devastated; she was shocked.
"He's more private. She always has her whole entourage and he couldn't take that ... Being in such a public relationship was fun for James at first, but then it got to be too much and he wanted his normal life back."
And it is unlikely that Mariah - who has five-year-old twins Moroccan and Monroe with her ex-husband Nick Cannon - will be expected to give the ring James bought her back.
An insider shared: "She doesn't have to give the ring back because she didn't call off the engagement.
"She had every intention of marrying him - she had a dress, her daughter had a dress, they were excited, they were making wedding plans. Then, on the last day [of their Greek vacation], he said, 'I can't do this anymore, this is just too much.'"