Struggling with depressive over attachment to my best friend
I (18F) am in a bad spot in my life right now. I struggle with depression, and this is likely the main contributing factor to my feelings about my friend (also 18F).
My best friend is my favourite person. We spend a decent amount of time together/texting, and we both value each other strongly. The problem is that I have become too dependent on her. I find myself thinking of her as my only source of happiness. I count down the days until I get to see her, anticipate her texts, and am painfully upset when our meet-ups end. I can connect these feelings to my lack of enjoyment with life in general. I have no passions or prospects, so she is my only source of comfort, fun and understanding. I am clearly clinging to all the emotions she brings to my otherwise colourless life.
I finally decided this was a problem after I recently went on a short trip with this friend, which once over, left me absolutely beside myself with grief over losing the ability to see her non-stop. The end of that trip resulted in my depression instantly becoming the worst it has ever been, and I am still recovering from the severity of it. No point going in to detail, but I was frequently in tears and had completely lost my appetite for days.
This is simply causing too much anguish in my life. I want to spend all my time with my best friend. She wants to go to uni, spend time with her family, and have her own husband and kids - meaning she has priorities I am going to find too painful to see be placed over me in the future (and am already selfishly dreading).
I want to fix this. I am afraid to lose the strong love I have for her, but I cannot cope anymore. Lucky she is not aware of the extent of my feelings, but this is clearly unhealthy. I would hate to ruin what is the best thing in my life, and what is a very strong and beautiful relationship. I would also hate to hurt her, make her uncomfortable, etc because she does not deserve that at all. Please help or give advice.