Youngsters believe that love blossoms at college canteens?  

The college canteen is a common place where students gather at a usually common time, so it is highly probable that more interactions happen here. When I was in the university, this is true. I could get a glimpse of almost everyone in the campus and I could even see someone interesting. But of course, if I have a crush, I would know that the canteen isn't the only place where I could possibly get a glimpse of him outside the classroom. There are other spots in the school where he could be hanging out (if I had done my research, which most probably I could have--hehe). Otherwise, the canteen it shall be. Thus, you're right, the canteen is always the safest and the most common place where love can possiby blossom.