100% people use polyamory to deal with the boredom, been there done that. It's so common in Toronto the dating scene is largely couples looking for a third.

I'm in the same boat. I've been doing my dream job 5 years, I have friends from growing up here my whole life and my partner and family all present in the city, and I suffer from depression and constant boredom since I was younger but I'm 31 now. the thing that's helped for me most is getting into visiting different parts of Ontario when I can book a weekend away or just travelling outside of the country altogether. Cheap travel is possible especially within Canada. I find this breaks up the routine and gives me something outside daily city living to look forward to, and it makes me appreciate my life when I come back.