Sean "Diddy" Combs' ex-girlfriend provided the jury more insight into the rapper's life outside his music mogul status when she returned to the witness stand Tuesday for cross-examination in his federal trial for sex crimes.Using a pseudonym, "Jane" testified that she broached the subject of rehab for the "Last Night" rapper after allegedly witnessing him "overdoing the partying." She claimed he would offer her ecstasy before engaging in role play and that Diddy liked to use the words "voyeurism" and "escapism" to describe his fantasies of watching her participate in sexual encounters with male escorts.Attorney David Seltzer told Fox News