I had two relationships in a row conclude on Valentine's Day¹ I decided I might just be too complicated and dysfunctional to be in a long term relationship and better get used to being single.
Then I ranted about my relationship experiences on OK Cupid and someone found me. My sweetheart and I have been together for 11 years.
¹ This is a phenomenon. While singles cry for loneliness and day-after chocolate binges, discontented lovers engage in introspection about why they're not quite happy with Mr. Right-Now and how big the gulf is between him and Mr. Right. And once they realize they are dissatisfied with their current partner, breaking up is imminent.