What? How come?
You know what? I can honestly say there is something to this, but not what you might think by it.
It is this: if you love yourself you'll never see anyone as good enough for you (or you'll rarely meet a person like this).
What I mean by this is - if you value yourself you'll demand that other person to value you just the same. You'll want true love and true respect, because you're used to it and you know how to recognize it. You value yourself over a mediocre (or bad) fleeting relationship and just having one for the sake of being able to say you're not single is the stupidest thing you ever heard of.
Now...if you don't love yourself you'll let everyone walk all over you for 'love'... You'll do anything, go anywhere, trust anyone, take anything...for 'love'. And you might never actually be able to recognize real, healthy, love. This could, very possibly destroy you as a person - emotionally and physically.