One of my fraternity brothers was interested in her, and I promised him I wouldn’t interfere. Rather surreptitiously, I rationalized that as not initiating any romance with her. So when she started flirting, how could I resist?
Postscript: We’ve been dating for two years and three months, and we’re happier than ever. It took a while, but eventually the fraternity brother and I stopped exchanging feral glances—I think.