Relationship between type 7 and type 2

The epicurian and the altruistic

Tyrion Lannister (GOT)
Lily Aldrin (How I Met Your Mother)

Attraction

The 7 finds a faithful partner who can follow him in his adventures, while the 2 finds a non stop entertainment with the almost inexhaustible energy of the 7.
The 2 is attracted by the adventurous spirit, the player side, the spontaneity, the energy, the humor and the mental agility of the 7.
The 7 is attracted by the altruism, idealism, emotional depth, empathy, sensuality, and compassion of the 2.

Points where to be careful

The main potential concerns in this relationship is that the 2 usually needs a fusional relationship with his partner, while the 7 can feel quite easily limited and may have trouble with exclusive commitments with too much proximity, he holds a lot to its independence and struggles with restrictions.
Thus the 7 can find the 2 as being too intrusive, possessive, manipulative and restrictive.
The 2 can feel neglected and find the 7 as being too player, selfish and untrustworthy.