What Does Corvino Have to Say About the Role of Sex

What does Corvino have to say about the role of sex in relationships?

A) Sex is pleasurable, and pleasure is the source of all value, including the moral value of relationships
B) Physical intimacy is always connected to other forms of intimacy
C) Sex, whether it is had in the context of homosexual or heterosexual relationships, only has moral value in long-term relationships
D) Sex does not really play an important role in relationships, even romantic ones
E) There are good reasons to doubt that one can remove the sexual aspect of relationships and have all others remain the same