Usher's ex-wife Tameka Foster claims singer is faking grief over death of 11-year-old stepson... Ouch!

                           
                                               Tameka at the funeral of her son

The grieving mother claims Usher 'visited Kile in the hospital only once' in the 15 days he was on life support following a freak boating accident last month. 

Usher, 33, requested their August 13 hearing be delayed, claiming heading to court 'in the immediate wake of this tragedy' would cause 'unnecessary stress and strain' for all parties involved.

According to TMZ.com ,Tameka has scoffed at the request in subsequent filings, claiming Usher's attempt to delay the hearing is 'simply a transparent sham', calling his feelings for Kile 'bogus'.