Love...it's something that is so real and true and deep and forever when you're in the middle of it. And it may be. But I don't think it's necessarily a guarantee. That's not to say that it can't be, or hasn't been or won't be...that's merely to recognize that finding it, then having it, then losing it, are totally natural parts of life.
And I think when we realize this, and are okay with it, it makes falling out of love easier, because there really is no love loss for the person, just for the love affair - which can be completely detached from any one individual. In other words, that trait isn't singular, so it doesn’t belong to any one person. It is then that we can learn to be deep and honest and true and forever friends.