>>2473574She based snufkin off a disinterested lover who broke her heart.
It has been suggested that moomintroll is a self insert and that the dynamic between him and snufkin is an allegory for her own troubled sexuality. But you'd have to ignore the canonical self insert of too-ticky.
Basically, if there ever was supposed to be romantic/sexual tension between the two (and that's a big if) it was to be an esoteric implication for people who actually knew her.
She probably did not expect gaggels of bizarre tranny-groomers to vivisect her life and barf all her personal issues onto creations.
She had a rough life of sexual abuse, romantic failure and general lonesomeness.
Did she cross some wires in her work? Maybe. Did she want it to be the focal point of her work? Definitely not.
Snufkin and Moomin are great friends. Friendship can be the deepest and most meaningful of our experiences.