The Universe is very very big.It also loves a paradox. For example it has some extremely strict rules.Rule number one Nothing lasts forever.Not you or your family or your house or your planet or the sun. It is an absolute rule. Therefore when someone says that their love will never die it means that their love is not real for everything that is real dies. Rule number two Everything lasts forever.
Such a little thing really a kiss... most people dont give it a moments consideration.