Salut Étincelle !
sorry it took so long, I'm new here too... but I'm from the Laurentides area, a bit far for a ride partner .
but I thought I could give you a link that can help you find partners , or even better riding club in your area ! they ride during the week and have longer rides on the weekend, they also split up in groups that ride about the same speed , so everybody feels confortable , and you can make new riding pals ...just click on the veloquebec link, choose your region , type of riding (road or mountain bike) and voilà !!
http://www.velo.qc.ca/fr/index.lasso?page=club
hope it helps !
tourlou !