Fleabag

Fleabag, played and written by Phoebe Waller-Bridge, is the main character of the dark comedy Fleabag.

Throughout the show she is shown dealing poorly with tragedy, family drama, and self-doubt. She mostly distracts herself with flirtation, inappropriate relationships (including a priest), and sex. 

In the first season we see her flirting with both men and women, but it is initially unclear how bi Fleabag is. 

It isn't until season 2 that she has a talk with Belinda, played by the incomparable Kristin Scott Thomas, and when asked if she's a lesbian, answers "not strictly". A few minutes later she leans in for a kiss.