Backpacking Europe Summer 2012 - Group Travel

This summer, I want to go backpacking through a few countries in Europe (my top 3 are Spain (pref. Barcelona and Seville), France and Italy but I don’t mind going to other countries as well). I'm willing to stay for about 2 weeks to a month and I intend on staying at hostels for the entire duration of the trip, since my budget is limited. The dates I have listed are tentative and I am very flexible with them - I wouldn't mind going in August or September the latest.
I'm a 21 year old student from Toronto, Canada; very outgoing, laid back, easy to get along with and adventurous. I would like to travel with a small group of girls but I wouldn't mind traveling with guys too, as long as there are other girls there as well (preferably, all from Toronto). If I were to travel alone, I would want to travel with another female like myself (about 20-25 years old), again, preferably from Toronto.
I think that it is important that my potential travel partners share my love for adventure, are responsible, mature and willing to try new things. Please let me know if you’re interested in joining me on this trip!

Backpacking Europe Summer 2012