Every year I was single during Valentine's Day (after puberty) was terrific. Nothing creates a target rich environment than the low self-esteem of the fairer sex.
Or I just don't have a soul (another reason why I'm right of center and you're a dem) On How I Met Your Mother tonight, they actually hit on the same concept. Barney called the day before Valentine's Day, "Desperation Day" and used women's low self-esteem of being alone on Valentine's Day to sleep with them.
You kind of have to go to dive bars. The popular bars are usually filled with a bunch of douchebags trying to score some tail but mostly a bunch of dudes standing around.