When a person allows their heart to open up to another they allow themselves to love. However, sometimes they become so dependant on that one emotion that when worse comes to worse it beats them down. In the beginning they hadn't expected, and even if they had seen it coming they wouldn't have been able to stop it because love is inevitable. You can't run away from it, and you can't beat it. You can try to ignore it, but even that won't take that ache in your heart away because when you truly love someone... the love is never ending...