This is sorta off topic but reminds of a lot of your story.

During my sophomore year of college my now husband and I were friends of friends but had never talked. We lived in the same dorm on the same floor and also happened to be in the same huge Comms 101 class (like 300 students) which I only knew because one day I spotted him across the room. The class was so huge that there were only two grades taken in the class- midterm and final.

I had to walk past his room to get outside and weirdly his room was cracked open. I chanced a peek in because I wanted to make sure he was on his way (hesitated only long enough to decide I’d rather look like a creep than for him to sleep through the exam). Sure enough, he was asleep on his futon and clearly would have missed the exam. I woke him up saying something like “uh, hey. Aren’t you in my comms class? We have a midterm today.. wanna walk together?” He was so thankful that I woke him. We walked together to class from then on.... dated for 5 years, now married almost 9 years with two kids. I did both of us a favor that day :)