The on-and-off relationship between former Bond girl Denise Richards and Richie Sambora has ended once again after an ''epic argument''. It seems that the two can neither live together nor be apart. They reunited in November last year after splitting in 2007, not only this, in January this year also the report of their split came out but they again re-bonded last month. According to the latest buzz they have gone separate ways once again after a huge fight in Nashville, Tennessee, last week. ''It's over. They had an epic argument in Nashville and Denise told Richie she couldn't continue the relationship any longer,'' a close source told Celebuzz. According to eyewitnesses at the Hermitage Hotel in Nashville, where the duo was staying there as Richie was to host CMT Awards, Sambora was heard screaming. ''Sambora screaming obscenities at the top of his lungs from their ninth-floor suite and he appeared drunk as he walked through the building, one guest said. ''I was wondering what the problem was,'' another added. The rumours came after Denise walked the CMT Awards red carpet all alone.