Now Yolanda saw more “Doesn't this happen all the time in presidential politics? People prefer candidate $A$ when $A$, $B$ and $C$ are running, but when candidate $C$ drops out, they shift their preference to candidate $B$.” Alice said “You could say the same thing about close personal relationships.” Although she didn't say it, she was thinking that it wouldn't matter how many dropped out if Bob was one of the remaining.