Full Idea
If you love a person as a type instead of as a token (i.e. a "person", instead of a physical body) you might prefer a run-down copy of them to no person at all, but at this point our idea of loving a person begins to crack.
Clarification
A token is an item; a type is a set of characteristics
Gist of Idea
You can only really love a person as a token, not as a type
Source
Bernard Williams (Are Persons Bodies? [1970], p.81)
Book Reference
Williams,Bernard: 'Problems of the Self: Papers 1956-1972' [CUP 1979], p.81
A Reaction
Very persuasive. If you love a person you can cope with them getting old. If you own an original watercolour, you can accept that it fades, but you would replace a reproduction of it if that faded. But what, then, is it that you love?