得到你失去全世界又怎样
[dé dào nĭ shī qù quán shì jiè yòu zĕn yàng]
'Even if I gain you but lose the whole world, so what' shows an all-consuming desire where obtaining someone's love outweighs all other considerations. This expresses that for the person, loving or being with this individual holds more value than anything else in life, no matter what has to be given up as a consequence.