We all have close friendships. The ones where you and your friend are close, almost best friends, and you tell each other a lot, sometimes too much, about your personal life, and you hang out pretty much non-stop. And they know enough about you that they could ruin your life.

Unfortunately, there are times that these friendships come to an end. Sometimes that end is sudden and tragic, or it is a prolonged string of miscommunication and feeling misunderstood, and other times it just kind of dissolves with no real reason. Either way, the end of these friendships is painful. And we would have never thought that we would be in this position. Here are 12 things that go through your mind when you lose a good friend:

1. You wonder how in the world you got here.

You try to figure out how in the world you got to this place, how you lost a friend that was so dear to your heart. And if it ended tragically, your heart will hurt whenever you recall this person.

2. You will always miss this person.

Even if the friendship ended badly, you will always miss this person. You had a good friendship for a long time, and you will always have good memories with this person.

3. There will be times that you want to reach out to this person.

You want to text them and apologize but you won't know what to say, or you don't know if they want to be friends again.

4. Your heart will hurt when you see memories with them on your Timehop.

Or your Facebook. Wherever you see the reminder, your heart will hurt. You will miss the good times that you had with them, and you will fondly think of them.

5. No matter how mad you are at them, you will never share their secrets.

Because you hope they won't do this to you. You both have enough information about each other to ruin their reputation or destroy them, but you won't because there seems to be an understanding that no matter how badly a friendship ended, you never share that information.

6. You learn that it is okay to miss someone even if they were toxic to your life.

You miss the good times. You miss the times before your friendship started to fall apart.

7. If you were close with their family, you will miss them too.

You will miss your second mom and second dad. Or your inherited little brother. You'll think about calling up "mom" and asking how she is. But you won't, because that's crossing an unspoken boundary.

8. You will regret the end of the friendship.

If it was tragic and messy, you'll wish you could take back your words or actions. If it just dissolved slowly, you'll wish that you stayed in touch more, that you just sent that text or made that phone call when you had thought about it.

9. You will periodically check in on them.

Maybe you look through their Facebook every now and again to see what they have been up to. Or maybe you ask someone how they are holding up. You will want to know what they are doing and how they are holding up in this cold world, because at one time, they were a good friend and nothing changes that.

10. There will be things that you will never see the same.

It could be a gift they got you on family vacation, or a note they wrote you. Or maybe it's a coffee shop that you visited regularly, but your life entirely changes when you lose a best friend.

11. You will always care about them.

No matter what, your heart will always hurt when you hear about a tragedy affecting them. The pull to want to call them when they lose a family member, for example, will never disappear. You will always care about them.