Guy friend

I have had a close guy friend from college for like 5 years. For a while, he was single and we got a lot closer. I thought we were going to start dating. He made it seem like he was interested in that too. I felt like we had a mutually felt, deep connection and understanding and love for each other. Then I didn’t see him for a month or so and he started dating someone else. He now hardly talks to me anymore. It really hurts and I’m really confused. Do you think he just wasn’t interested after all? Or did he get scared of such a strong connection? I’m sad that I’ve lost his friendship, but also hurt because he clearly didn’t value our relationship the way I do.