My theory on adelaines relationship

Scrolling through this sub and saw a comment that adelaine launched her bf after sierras wedding. I think it's bcz now that Sierra is married to sam. Adelaine wants to marry sams best friend bcz if they brokeup Sierra might distance herself from adelaine since she has to pick a side and she might pick her husband's friend to maintain their relationship. So adelaine will try to make this relationship work anyway possible so that her relationship with Sierra and sierras lifestyle ties along to adelaine when her boyfriend and Sam are still friends.

It's just my theory it could be completely false.