Common has no problems with his ex-girlfriend Serena Williams dating another rapper after her reported romance with his former rival Drake went public this week. The two were previously linked in 2011, a year after Common and Williams reportedly ended their three-year relationship and before Common?s well-publicized feud with Drake. When asked by TMZ.com what he thought of his ex-girlfriend?s reported relationship on Thursday, Common said, ?As long as she?s happy, I?m good.