Composite Sun in 11th house:

The Sun located in the 11th house indicates that friendships, groups of people, and hopes, goals and desires will be very important to both of you. No matter for what purpose you have come together, you should get along with each other very well. This is an excellent location for marriage because you value friendship so much, and this will help bond your relationship together. Sexual attraction is not so obvious here and needs support from elsewhere in the chart in order to be active. The 11th house is connected with social expression and fitting in with various groups of people and if the Sun is favorably aspected, then you will share a great deal of time together in social and humanitarian efforts. You will enjoy having people around you and they will respond in the same way. In fact, you will be happier with other people around rather than not.

This interpretation is from the Relationship Composite Report. Get yours here.

Do you and your partner have a composite sun in the 11th?  What's it like?