But there are ways to leave the friendzone and keep the friendship.

Realize that friendship is just as important as romantic relationships.
If you are in love with your friend, don't forget that friendship is a value in itself. Recognize to yourself that you need your friend not only as a possible partner, but also as a person who is always there in difficult moments.

Become a best friend.
Be a support to your friend, an attentive listener and an assistant in any business. Thus, you will show that you really depend on it.

Don't rush to confess.
If you understand that you love your friend, do not rush to confess. Try to show your feelings with attention and care first. This may help your friend realize that there is more than just friendship between you.

Take the initiative.
Invite your friend to spend time together. Watch a movie, go to the theater or just take a walk. In this way, you can get to know each other better and feel if you both have mutual sympathy.

Don't try to change your friend.
Don't try to change your friend to be the way you want him to be. Accept your friend for who he is, and if you have mutual feelings, they will manifest naturally.

In conclusion, if you are in love with your friend and don't want to lose him, remember that friendship is a value in itself and relationships can be volatile. Be honest and considerate and you will be able to leave the friendzone and keep the friendship.