I don’t get guy logic

I don’t understand guys. I was 100% with him throughout the year, I did his laundry, folded them ( even though he’d messily put them away) i would clean his room, put gas in his car and love him like no other. After all of the effort I put into him he leaves me alone on christmas eve. My heart is shattered in a million different pieces. I’m glad I got the chance to hopefully change who he was as a person. I hope he learned how to treat woman at least a little bit better. I hope I helped him realize that not all woman are gonna do him wrong. But not all women are going to want to put up with him picking on her, or tickling her 24/7, or carrying her down the hallway and accidentally smacking her head off the door frame. Most woman aren’t gonna stand beside and hold his hand while he’s puking because he drank too much that night. What I’m trying to say is you could give him the world ladies and he’d still leave you to pick up the pieces he left behind. Here I am, crying my eyes out and have been for the past few days, I loved him more than I loved myself but don’t chase love, let love find you. Dont think you arent good enough for him because he can’t learn to love or trust from the last girls. Stay strong ladies. Good luck❤️😢