Confession time: Back when I was in college, I was proud that all my friends were dudes. It sort of felt like I'd won their acceptance, and they liked me more than the other women who lived in our co-ed dorm. The reality is that we just became friends because I had developed a nasty habit of chain smoking outside where many of the international residents smoked all day, and had social anxiety that stopped me from making meaningful friendships with women. Thankfully, this embarrassing phase didn…