Relationship between type 2 and type 6

The altruist and the loyal

Elena Gilbert (The Vampire Diaries)
Bilbo Baggins (The Hobbit)

Attraction

It is a complementary relationship in the first part in the sense that the 2 is attracted by people with needs that are likely to like him for his services, and the 6 of nature often very anxious, is often lacking in comfort.
The 2 is attracted by the modesty, the player side, the loyalty as well as the worker side of the 6.
The 6 is attracted by tbe kindness, compassion, openness, and the helpful side of 2.
These two types have the desire to serve noble causes. They are both relational and can form a couple with mutual respect, trust and affection.

Points where to be careful

The 2 can sometimes see the 6 as being too suspicious, pessimistic, controlling, accusing, negative, and resistant to his help.
The 6 can sometimes see the 2 as being too intrusive, manipulative, with too many needs for attention and approval.