>>/91459/
You're imposing an interpretation which doesn't fit its context.

Let's suppose "flavors" are races:
> I desire to bite you with my lips 
A desire for an action:
> tasting sweet become umami
Sweet is Race X, and an individual from said race can transform into Race Y (umami).
> flavors intermix
Racial transformations, in this particularly case, take place with racial mixing (you might agree) but it can also happen separately.

Now, suppose "flavors" are sensibilities:
> I desire to bite you with my lips
A desire to bite a woman with one's lips so that...
> tasting sweet become umami
A sweet sensibility can willingly transform into a savory one.
> flavors intermix
This sensible transformation, in this particular case, takes place together with two people intermingling their sensibilities. Sensible transformations can happen with or without sensible intermingling.