Why do your own friends start to move away more and more from you as you become more sucsessful?

I joined Instagram back in March of 2017. I didn’t know really what to expect so I just went with the flow. I made this friend on there around April and we just started texting a lot. They were always responding to my texts and they seemed really nice. That kinda changed when they saw all the nice stuff I own and how I was literally skyrocketing with followers right past them. Sometimes my followers have even asked for pictures and autographs. My friend has known about how successful I’ve been compared to them and even tho I never tried to make it a contest they think it had to be and they are now not as nice and seem like they are trying to compeat with me. They are still my friend and all but it almost seems as I got more successful the less they liked me. What should I do?