During my first semester in college, I clicked with a girl who, to my displeasure, was already in a long-term relationship. If you saw us together, you would probably assume we were a couple. I played with her hair. She looked for me on campus before class. We'd laugh and joke around incessantly. Her behavior struck me as flirtatious, and I always felt that beneath the surface she had feelings for me that went beyond the platonic variety. There I was, on the verge of falling for someone who could not offer anything more than friendship. For the remainder of the semester, I held out hope that our unmistakable chemistry would prompt her to break up with her boyfriend for me. Alas, it didn't happen. She remains loyal to her now-husband to this day, and I'm happily married to my wife. Though things worked out for both of us, I was very disappointed then that I could not pry a great girl from another guy's arms. I learned a valuable lesson from this experience: Cha...