I find the idea of a relationship with no penetrative intercourse, or very little, to be quite interesting, erotic and very attractive. As Joy says however, this is not a platonic relationship if the male is pleasing a woman sexually in other ways.
The practice of orgasm control or denial for the man works well with this kind of sexual dynamic, especially within the context of a Female Led Relationship. In this way, the man’s pleasure is found in pleasing the female, she being the leader of the relationship, in the sexual dynamic as well as some of the other “food groups” described elsewhere on this web site.