<prompt> tafadhali geuza maudhui haya ya swahili kwenda kwa kiingereza.mwanamziki huyo aliyewahi kushindi tuzo za grammys na swizz beatz- ambaye jina lake halisi ni kasseem dean- wamekuwa pamoja tangu mwaka 2008.  <response>: keys and beatz, whose real name is kaseem dean, have been dating since 2008. 