I could be wrong, but in the preview for the finale, they showed Marty on bended knee, which I would assume means he is proposing. The woman in the preview had on a dress with a black spaghetti strap.
In previous screens, they showed Suzanne in a black sparkly backless dress with a turtle-neck type collar. Stacy's dress had straps.
I'm guessing Stacy wins and of the two, I'm glad. Suzanne was getting a little possessive and annoying. Her comment regarding the lie detector on the 7/19 episode - I'm sorry one of these women will be going home. UGH. She came very close to sitting in that lie detector chair herself.