Drunk in Love: is that healthy or dysfunctional?

It has been said that to be drunk in love or "love drunk" is when you miss the other person so much that you simply cannot get them out of your mind and you become a mess constantly thinking about them.  You're facebooking them, calling, texting trying to get a hold of them, and going crazy when you can't reach them.

Some people said they zone out, become anxious and can't think straight, sounds like "drunk to me."  Real Talk, when you love someone, don't you think about them constantly, love to be around them and if you were to break up, heartbreak would occur?  So what's the difference? 

Let's talk about this Love Drunken State.... is it healthy or dysfunctional?