Ok thanks! How does chase know who is a spouse (I.e. Why can't I find a friend that has a premium card and transfer to them)?
I was looking this up recently and their T&Cs state:
Transfer points to frequent travel programs
You can transfer points in 1000 point increments, but only to participating frequent travel program for accounts belonging to you or one additional household member who is listed on your account as an authorized user. Once you transfer points to an authorized user, that person will be the only authorize user eligible to receive point transfers through this program.
Combine points with other chase cards with ultimate rewards
You can move your points, but only to another Chase account with ultimate rewards belonging to you or one member of your household.
Based on the definition of household it's probably safe to assume the address needs to be the same.