What should I do ???

My friend hasn’t been talking to me much recently. I asked him if something was wrong and he said no, but then it got worse and he started talking to me even less. I asked again and he told me that he was pissed because I bought a car against his advice. Now he’s been giving me the silent treatment and I feel awful. I’m happy with my new car. But the loneliness is just awful and I really miss him. I want things to go back to normal.

And yes, I know that I should be allowed to make my own choices. I know it’s not my fault. But i miss my friend and I can’t just let him go. How do I fix this ???