The F Word (2013): Also called What If, which is the title used by the IMDb and Wikipedia, but I'm going with what Netflix calls it.
I recall seeing generally favourable reviews of this from the festival circuit back when it came out, but I only saw it now -- aided by my desire to focus on movies running under two hours during weeknights, which means I'm picking from a narrower selection. Anyway, I didn't have much in the way of expectations, but I was really impressed by this. The romantic comedy is pretty much a mouldering corpse of a genre these days, with the only sign of life coming on the indie fringes -- as with this year's The Big Sick (more of a dramedy), which also starred Zoe Kazan; here's the female lead opposite Daniel Radcliffe, who gives the best screen performance I've seen from him to date.
Plotwise, this isn't anything outside the ordinary (boy meets girl, she's got a boyfriend, she asks him to be her friend anyway, things proceed from there), but the execution is stellar. At times the dialogue is perhaps trying a bit too hard to be ribald, but the comedy and the more heartfelt moments land consistently. There's one hilarious slapstick bit in the early going that is perhaps a bit outlandish compared to everything else, but I loved it so much on its own terms that I'm fine with it.
It's also great to see films that, in addition to being filmed in Toronto, are actually set there -- even if it's a Toronto populated mainly by English and American actors. In addition to Radcliffe and Kazan, the supporting cast includes Adam Driver and Mackenzie Davis, and, in smaller parts, Oona Chaplin and an uncredited Sarah Gadon (the latter was kind of distracting, because I watched this right after the new episode of Alias Grace, which Gadon stars in).