Mutual Breakup...

This may be a little long... I'm sorry
     I just recently broke up with my boyfriend about 3 weeks ago. We dated for 3 1/2 years, my sophomore year of highschool to my freshman year of college. Within the past year we started working more and having classwork to do. Even though neither of us went away to school we just started to drift apart. We rarely saw eachother and when we did we started to bicker over the littlest things. I was always the one texting him so I decided I would stop and see if he would notice. It took him a full week to text me. I guess he just stopped caring, not that I was the best girlfriend either. It's just really hard because we were best friends for 2 years before we started dating and I not only lost a boyfriend but I lost my Bestfriend too. I tried telling him that I would try to work it out but he said he didn't see it getting fixed. He wouldn't flat out say he wanted to breakup, so I had to be the one to say it. I decided it was better to end it now than to hate eachother and never be able to talk again. 
I was just wondering if anyone has had the same situation. Neither one of us did anything wrong I just feel like he fell out of love with me and it stings a little bit. 
I'm not really sure who I am anymore. Most of my teenage years I spent with him by my side. We did a lot of growing up together. Sometimes I'm great and I know that I made the right decision. But other times I get super sad and I just miss him in my life. Any advice would be super appreacited. Thank you💛