Does it get better

Hi, just went through my first break up (relationship of four years) I ended it for situational and personal reasons having nothing to do with how much I love him. It was honestly a perfect relationship besides the fact that I feel I have some growing to do on my own and need to learn how to be ok being single. I’m beyond heartbroken and feel as though I’ve done it to myself since I initiated the break up. I also feel immense guilt because I care about him so much and know how much pain I’m causing him. He was also such a massive part of my life and not speaking to him constantly like I used to feels like there’s this gaping hole in my life. Does it ever get better?