French Song i just am dying to Know what it is?

Ok this is a little weird but i was in france and i saw this music video and there was this dude who was singing this song. I SPEAK NO french so i cant understand or write what he said but i think and dont laugh but i think it was Setrah noo sa ser swa damoo perder por mouir kel ker lamour oh oh (something) pou dor lavie dermain