Friendship feels like its dying

I need to get something off my chest,

I met this friend freshman year in college and we became best friends by the end—enough that we decided to room the next semester. However, we as a friend group decided to move dorms and became separated as a result. Of course, we weren't going to see each other as much, and in combination with an incredibly difficult course load that lead to depression, I felt we drifted apart a lot. Not long after the move, whenever I tried to talk to him, he seemed disinterested in what I had to say and would often avoid eye contact with me. He thought I ditched him, which I later found out after having lunch and him saying he "forgave me for last semester" (some part in me could tell him why I wasn't around). Those who had depression can testify that it can seem almost impossible to stay in touch with friends. However, my depression seemed to go away. This year, he, two other friends, and I decided to get a quad together so I had hope things would go back to normal. He and I came early to campus for various reasons and for a second I felt like that spark was back and I got a taste of what our friendship used to be like. At one point he said, "I'm glad ur back," and hugged me. I felt so happy. However, when the other two guys showed up at the quad, my friend changed so quickly. He now rarely initiates conversations, and when I do, he seems disinterested and sighs a lot. However, when my other friend comes, he perks right up and seems to completely ignore me. Also, whenever we are in a group, he always seems to disagree with what I'm saying, which happened a lot in the semester that I was depressed. Now, I find myself walking on eggshells every time I want to speak in the group and when I do I just expect to hear a "Nah," come from him. It's so exhausting and distracting to the point where it's always on my mind. Hell, I wrote this post in hopes of finding peace to do my homework, and I admit it's helping. I consider him and my two other suitemates my best friends and I honestly don't know what to do, I feel like my sadness is coming back. Any comments, questions, or concerns are appreciated.