Right.. in the way back when episode of 'The Vault' she says "All the Candy People are like my children, but Mr. Cream Puff he's like my boyfriend" and I Remember She Giggled when she said that part. So she had/has the capacity to love one Kingdome Citizen in a more personal and special way.
So this means she was…

Maybe PB had a sad sigh and poured herself a drink at the end b/c of what LSP said at the end - again.
that 'she' didn't know how heartbreak felt like.. but I'm thinking she does.