A good way to find people in your area may be through reaching out to expat bloggers in Belgium. Bloggers not only offer helpful advice about your new place, but are often interesting people to connect with online and in real life. Once you have communicated on the forums a bit, the feature of the expat network will also be open to you in which you can directly contact other expats in the area. The Guide to Brussels also offers great info about the city for expats and travelers.

What brings you to Bruges? I visited the city a few years ago and loved it. Such a fairytale place. Best of luck!