
This is the main character. She's so fine. Mmm baby. Her name is Bo.
Here's her fucking a chick!

Yes, the main character is romantically and sexually interested in women, and yes, she does have an established relationship with another women (who is also a recurring character). Not only that, but the sex is awesome. It's not all timid and "we're going to slather our tongues around our faces for the boys watching." There's biting, and ripping the clothes off each other, and implied eating out. It's hot. It's real. And afterwards, there's an emotional reveal that makes the sex really awkward.
Also, here's Bo fucking a dude.

Now, to be honest, I am happier with a fully-formed portrayal of bisexuality than I am with a full-on lesbian. Bisexuals do not get enough love. Bo's certainly getting enough though.
On that note, it is possible that this portrayal could swing too far into stereotype territory, and we'd wind up with someone who is a total equal opportunity slut. However, I'd say that's not the case here. They establish that the reason she is so sexually active is because she's a succubus -a supernatural creature that feeds off sexual energy. They use this to excuse why she's bi, but not explain it. We see another succubus in the series, and she definitely only likes man parts.
And cue the army of half naked men.
The only people Bo has had sex with in this series so far has been people she is romantically interested in (2) and people she's fucked to make them jealous (3). One of those three -or rather, two of those three -was a threesome.
Yep. That just happened.
So what we see established is not a bisexual slut, but an independent, confident polyamorous woman. The only downside is all the jealousy -you have no right getting jealous over someone else's girlfriend when you were banging someone else on the side. But hey, it's an edgy show -if the characters weren't a little hypocritical and damaged, it wouldn't be fun.
More importantly, the way they establish these norms is just gorgeous. No one bats an eye that Bo likes both. In fact, they draw several deliberate parallels to the scenes with Dyson and Lauren (the two main love interests) to make it look like they are on equal footing. The first-time sex for both has many of the same shots -despite lady sex being a little awkward in a hetero position. And then there's this adorable shot.

"Oh. Um hi, not the person I slept with. Uhhhhh. toothpaste?"

"Hi, half naked guy in my bathroom. It's over there."

"Toothpaste?"

"Not this again."
Both main love interests, in different seasons, have the same shot of morning-after -looking around awkwardly for the toothpaste, and being stumbled upon by the roommate. There are subtle differences, but for the most part, it's the exact same scene.
Plus, a good half of the characters are female. The main character is female, and so is the secondary character. And they are all really well developed dramatic characters with skeletons in their closet.
Plus, throughout the show with varying minor characters, they work in a whole spectrum of alternative sexuality. This show is edgy, the characters are amazing, and the sex is tasteful. Very tasteful. Despite the sexual nature it takes on at times, the worst the nudity gets is a silhouetted side-boob nipple, but nothing more graphic than that. This show covers some great ground for sex-positive culture, especially from a feminist perspective.
So you know. There's no surprise that it's Canadian.