In a world where dating websites are becoming a common way for couples to meet, many of us still feel more comfortable dating someone within our social circle. Even if we do not know the "prospect" personally, we like it if at least one of our friends can give him a nod of approval. Unfortunately when you're searching for a date within your social circle, there's a good chance you'll end up liking one of your friend's exes—and an equally good chance your friend won't approve.