Here's a long time fantasy about a guy who discovers- quite accidentally, of course- that his fascination with little titties leads to befriending teens with little tits and then discovering that those teens are insecure about their tits and want to grow them larger.
He takes advantage, by spinning a story about his expertise in enlarging tits through "natural" methods.
This allows him to play with, massage with oils and creams and kiss and manhandle the sort of teenage tits he loves, all while "helping" the teens to enlarge their boobs.
A win-win for everyone!