As I reminisce on my last three years in college, I can't help but have my best friend come to mind. For those of you who have a best friend from your college days, hopefully this is a good reminder for you. For those of you who are not in college yet, this is something to look forward to.

Disclaimer: You can have best friends and not go to college.

Here are 4 ways you know you've found your best friend in college:

1. You start talking like one another.

One of the ways you know you have a best friend in college is when you start talking like each other. My best friend and I say "bro", "dude" or "man" at least 50 times in every single on of our conversations. Whenever we greet each other, we always do the same handshake. Also, however one of us talks, the other one automatically matches the intonation of their voice. It is something we don't think about, but shows we hang out a lot—maybe too much.

2. You develop separation anxiety.

Whenever you go anywhere without your best friend in college, you feel like there is a part of you missing. Class, lunch, the store—whatever it may be. When you go places without your best friend, you suddenly it seems like you have no idea how to function. You immediately text them asking where they are—even when you just talked to them 15 minutes before.

The sign of true best friends: To feel separation when you are apart.

3. Real talks happen every day.

You know you have a best friend in college when every day ends in each other's rooms with a serious talk about life. Conversations include hard things, funny things and serious things all wrapped up into one talk. Another sign you are best friends is when that time seems to pass by so quickly—even though you talked for two hours. Even when both of you feel like you don't have time to talk, it happens anyways.

4. Other people ask where your best friend is.

You know you have a best friend when you go to a place by yourself and people are asking where your friend is. Both of you are close that people start to associate both of you as one uni—inseparable. If people see you by yourself, without your best friend, they ask you if something is wrong. That is when you know you have a best friend.

There are plenty of other signs to know you have a best friend in college, but these are just some highlights.

I hope all of you have these friends in college.