I don't hate you. I am nostalgic for the happiness I know you are experiencing in these early days of the relationship. Because I know.

I know how much you'll love his goofy laugh, how he'll make you think it's a sound meant only for your ears.

I know how passionate and natural your first kiss will feel, like your lips weren't made for anything other than that moment.

I know how he'll hold you at night, and how you'll think there couldn't be a place more secure than right there in his arms.

I know that you'll study his quirks like your favorite book and that you'll happily and eagerly learn every detail you can about him.

I know that eventually you'll see him cry and watch him lose his temper. He'll apologize, but you'll just hug him and comfort him, feeling special and closer now that he's opened up to you.

I know just how quickly you'll get attached to him, fearfully wondering why it's all happening so fast.

I know how he's looking at you. Because it's a look I used to know so well.

And I know how easily you'll fall in love with him. Because I know how easily I did, too.

But because I know these things, I also know what else he's capable of.

I know that his past will haunt you. You will forever be reminded of who he was before you, somehow hoping you'll be the one to change him.

I know that his friends and family will warn you about getting hurt. They'll tell you how great he is, but they will also tell you to be careful and cautious.

I know that when he drinks, you won't always like the way we acts. You'll spend many drunken nights arguing and crying yourself to sleep over something stupid.

I know that he'll lie to you. It'll start with something small and unimportant, and it will lead to breaking your trust.

I know that because of this, you'll become the girl you never wanted to be — constantly worrying about what he's doing or who he's with.

I know how absolutely crazy he will make you and how you'll continue to stick around until the very end.

And I know that if you let him, he will break your heart.

He will give you the world and then rip it away from you, leaving you to question where it all went wrong. He will be the reason you stay up at night feeling every Taylor Swift lyric just a little too strongly until you finally fall into a paralyzed sleep. He'll ruin some of your favorite TV shows because watching them together used to be "your thing." He'll make certain scents bring back a thousand painful memories, and he'll haunt your dreams more often than you'll like.

Worst of all, he'll come back temporarily from time to time, mending your heart long enough just to shatter it completely once again when he leaves. You'll hold on to the delusional hope that maybe someday it'll all work out. You'll compare every guy you meet to him, and they'll never come close. You'll feel stupid and embarrassed for thinking about him 24/7, knowing damn well that you aren't even crossing his mind. You'll get told to move on by everyone you know and you'll wish more than anything that you could.

Just promise me you'll do me one favor. Enjoy every second with him.

Is that twisted and unexpected advice? Probably, but I don't care.

Because who knows? You could be the missing piece that I wasn't. You could be the exception. You could be the one who changes him. And if that's the case, will I be jealous and petty at times? Of course.

Will I always have a little bit of a broken heart? Yes. I would be lying if I said otherwise.

But I guess I see it this way...just because he wasn't my prince doesn't mean he can't be yours. And believe me, he has all the potential in the world.