The act of kissing in the same fashion as performing cunnilingus
As he was kissing her, he sucked on the top of her lip like a clitoris, cunnilipus style.
Promateau of romantic and Platonic. Whereas you have a friend you have romantic feelings for, but choose not to pursue a relationship.
He's her Rotonic friend. She's in love with him, but won't pursue a relationship with him, fearing the risk of their friendship. Don't want to be with him, but don't want no one else to have him neither.