Ysabeau "Bo" Dennis, is the main character of the Canadian fantasy show Lost GirlBo is a young woman who suddenly discovers she's a succubus, meaning that she feeds on the sexual energy of others. She is also able to use her sexual allure to compel others to obey her. 

After the discovery, she is torn between the light and dark fae. She manages to remain unaligned and uses her status and her powers to solve crimes— and occasionally save the world.

She literally needs to feed on the sexual energy on others, so she clearly has more than a few partners. However, throughout the series she does have two main romances— Lauren, who is a human doctor, and a werewolf detective named Dyson. Even when she is in a relationship with one of them, she isn't always monogamous (although sometimes she is). 

The show was created with the intention of having a bi woman as the lead character and so there isn't a ton of exposition around Bo's sexuality. She's attracted to men and women, she can be kinky or vanilla, and she's even been known to enjoy the occasional threesome. The entire show is incredibly sex positive, especially considering the dearth of openly bi characters on the air in 2010. 

The show's creator, Michelle Lovretta, is very open about the importance of bi representation in her show, saying,

The challenge was to create a fun, sex-positive world that celebrates provocative cheesecake for everyone, without falling into base stereotypes or misogynistic (or misandristic) exploitation along the way.  I also really wanted to defend the bisexual community and counter some sad tropes out there (bisexuals are sluts, can’t commit, are just afraid to be gay, yadda yadda) while also valuing and representing female friendships that have nothing sexualized about them at all.
So, I came up with a few internal rules and I moved to Canada that first year to co-run the show (with the fab Mr. Peter Mohan) partly just to help institute them:
1. Sexual orientation is not discussed, and never an issue;
2. No slut shaming— Bo is allowed to have sex outside of relationships;
3. Bo’s male and female partners are equally viable;
4. Bo is capable of monogamy, when desired;
5. Both genders are to be (adoringly!) objectified— equal opportunity eye candy FTW.
We haven’t always succeeded on all fronts, granted.  Mea culpa.  It’s hard to honor all those good intentions in the chaotic thick of production when manic rewrites and a million disparate studio/network notes need to be addressed.  But I can tell you we’ve always tried, and that I believe Prodigy intends to continue supporting those original mandates for the life of the show.[1]