Friend-zoned

AU with lots of fluff. Cosima is in love with Delphine, the problem is that Delphine is her bestfriend. Long-standing friendships are tested when Cosima tries to navigate her way from best-friendship to relationship with Delphine. What happens when Cosima asks Delphine to help prepare for an upcoming blind date... only to later reveal that the date is actually intended for the two