A term used about someone you love, the word vives is from the Romance languages. Vive in French, Viva in Italian, Portuguese and Spanish, and Vivat in Latin and Romanian are subjunctive forms of the verb "to live". Vives is defined as he/she lives.
When you call somebody 'vives' it can remind them of how they literally live for who the person, and then must follow the direction/command.
Furthermore, it sounds nice to call somebody it! Try it!
Girl: "Vives, can I have a drink from the shop down the road?"
Guy: (thinks about how he lives his life for his love) "Yes!"