Frustrating.

Why do I fucking feel like this? I don't know. It's just so frustrating that I feel like this. I just want to get rid of this feeling. I have a best friend whom I love the most. I was so glad that I got him as my friend and I still am glad. But thing is, he used to be so clingy and so loving. But now it feels like we're drifting apart. I told him that I feel the same. He said that it's not the case and he still is affectionate towards me. I love him so much that I'm afraid that I'd lose him. I hate this feeling. I hate that I feel like this. But its affecting me so much that I'm not able to sleep peacefully at night. I just feel like dying. I don't fucking know what to do. Am I the only one who feels like this? I've asked him and he says everything is normal. We seem to talk normally. But it's not like before. I want to be how we were. I feel like I'm not important to him anymore. But he says I am. He says the he loves me the most and I'm the most important person to him. But why am I feeling like shit? I know I'm just overthinking and stuff but its killing me inside. Can someone please tell me what to do? I just want to get rid of this feeling and lead a normal life. I feel like crying. I just want to him to hug me and say everything will be alright. I want him to do that without me saying it. I miss you even while texting you. I miss you. I miss the old you. I miss the fun we had. I miss everything. Love you idiot. I just want you to be there for me no matter what and remember that I will be there too.