When a group consists of members of this club, but without either of the two quadras having greater weight, its interactions are likely to be formed around common spiritual, philosophical, artistic, literary or humanitarian interests.
Fickle by nature, easily carried away by new people, ENFP requires an interesting and mysterious partner, who needs to be won over his entire life. ISTJ is that fortress which needs to be conquered by continuous advance. Even when he loves, he often hides his feelings under the mask of coldness.
Delta types make a point of talking about the rationale behind their actions and emphasizing the productiveness or unproductiveness of different ways of doing things - even in such emotional areas as personal relationships. Delta types rarely display their deep passions and vision, preferring instead to talk in more neutral terms about what they want to do and why.
The ENFP is particularly sensitive to and observant of manifestations of spontaneity, social awkwardness, and psychological compatibility or incompatibility. This comes from a combination of Ne (perception of who people really are, their personality, motivation, and how much they are revealing their personality and 'true selves') and Fi (sensitivity to people's subjective opinions and feelings about things).