According to People, sources close to Usher and his estranged wife, Tameka Foster, are not surprised by the couple's split, saying it was a matter of "when" not "if." The couple reportedly began to drift apart before they actually married in 2007.

'They peaked before they even got married,' a friend of Tameka tells
PEOPLE. 'Right after it was over, they started to drift apart. [Usher]
just wasn't ready to settle down, at least not with her.' " 

Although the sources deny that a "third party" is involved in their split, they say Usher still "lived like a bachelor," such as "not calling" if he was out late and just "taking [Tameka] for granted."

They don't spend a lot of time with each other. When they were
together, it was all about the boys." 

I remember Tameka was pregnant with their first son when they married; maybe they were trying to do the right thing by their son and get married even though they were drifting apart?

It's admirable, but sometimes things just don't work out. Hopefully they'll be able to parent their children together effectively.

Photos by Wenn.com