In my 20s I went through something similar, except I was far from having any sort of Christian piety (unknown to me, and goodness knows I am still working on it). I swear I had "mistress" stamped on my forehead, but not intentionally. I'd start dating someone and find out he was married/had a serious girlfriend - one guy worked in the same company as my best friend and he asked her to set up a date with me after we chatted briefly at a party. She started working on it until she found out he was getting married in a week! This sort of thing happened regularly.
But despite the clear differences (me being of a far more, ahem, worldly sort), I felt much the same frustration as you. By the way, are you actually Canadian (someone mentioned that...)? My personal opinion is many (certainly not all) Canadian men have a bit of a Peter Pan complex going on. Perhaps this is part of the reason I married a Russian fellow - he felt no fear when discussing, 6 months into our relationship, future wishes and expectation (kids, marriage and the like), unlike many a Canadian fellow I've met (although Canadian men are certainly lovely in many ways - I just don't know if I'd marry one).
Anyway, my story and many others I've met goes like this: you've given up in total frustration and heartbreak, and just decide, perhaps with a level of sorrow, that there is no hope of ever getting married and men are just jerks etc (please don't jump on me guys, I know this is not true, but when you get frustrated this is the way you start to think), and you just get on with your life and BAM! That's when the good ones come along. It's true. They (the guys) sense your desperation (and you might not think of yourself as exuding a desperate persona, but trust me on this one, you almost assuredly are in your own way - desperation does not automatically mean that you throw yourselves at the boys - it manifests itself in many ways) and this will work against you.
My recommendation is to forget the online stuff (can't say I've ever done it, so I'm sure it does work - in fact I know it does work - on occasion), but try VOLUNTEERING for something you either really enjoy doing (although quilting doesn't count as you probably won't find the kind of boys you'd want to marry) or you really believe in. I met my husband when I decided to volunteer backstage (props etc.) in a local semi-professional theatre on a bit of a whim while reminiscing about some of the enjoyable times in my childhood. My mom did some acting in local theatre, and she'd drag me and my brother to rehearsals and occasionally make us participate in the action in the children's Christmas plays. It was a blast, particularly as many of the actors were Brits and they were really quite hilarious.
I digress yet a zillionth time again. So, my husband was the director of this play I volunteered for. I also had a choice of the lead actor (also an opera singer). Fortunately I went with the director, which not only led me to a really great guy (although being an artistic type there is no hope I'll ever be a homemaker - just a warning as you indicated earlier that this was a dream of yours), but also led me to Orthodoxy - a great gift of which I sadly do not take nearly enough advantage.
I think volunteering is a great way to go. You participate in something in which you love/enjoy/believe, build extra skills, and meet like-minded folk/men. And you give to society in many way (and message to Heorhij - it doesn't have to be the kind of volunteering that gives you the heebie-jeebies - cultural volunteering usually has no self-righteousness involved. Is there such as thing a wine-tasting volunteering??? Saving society from bad wine???)