Unhealthy Friendship Dependency

this is going to sound pathetic or weird but.. my best friend is the thing that o continue to look up to everyday.i trust them with my life and belive almost everything they say. I depend on them for happiness, comfort, opinions, reassurence, and basically every other thing you can think of. they are my life, they are even in my dreams 90% of the time. I've only known them for 2-3 years and they have made the biggest impact in my life. they probably know more about me then I do. I have no privacy with them, I tell them almost everything even my secrets, weaknesses, embaressimg facts, family problems, etc. I have no boundries with them. im dependent on them for opinons. I can't make choices without them. if theres an event that I want to go to and they dont go I dont go either. If im hungry and they arent then I wolnt eat. i can go on and on. but basically I ask for their opinon on everday things like what i should eat, wear, draw, play, do, etc. i have no freedom. They are a neautral person in general (they dont really show emotions) so you can see how that plays put with me. I am great at detecting emotions (I have autism wich helps with that) but since my friend doesnt show emotions usualy it stresses me out and I beguin to think they are mad at me or sad about something. which is bad because I love them so it makes me sad. if they get, have, want, or feel something that I do then I get really stressed and hide it from them. this has happened a lot of times. for instence they are aromantic and I found out I am so I hid it from them because I thought they would think I'm copying them when I arent. They would say things that I would feel uncomfortable about (like saying that i would be cute with someone or something) another time they cut their hair in this one style that i wanted(they didnt even want that hairstyle they did it because they needed to) i wanted that hairstyle even before they got it. I felt so bad and still do. it made me not want that hairstyle anymore and made me feel guilty. theres many more instences but i dont feel like writing it. so overall i feel like my connection with them is unhealthy and i would like your guys opinion. is this concering? what is responsible for this? is this a mental health condition or caused by one i have?