why did your last relationship end?

i’m really sorry if anyone is offended by the question, but i’m doing a research for college (psychology major) and the topic is breakups. i’m not asking for any private informations (like gender, age or anything else), just for how long did the relationship last and what was the reason of breakup. you don’t have to share any specific details if you’re not comfortable with it, you can just weite things like cheating, miscommunication etc. if anyone is comfortable with sharing, i would really appreciate it and it would help me alot :) have a nice day everyone and i hope you’re healing from everything that is hurting!!

edit: i’m not gonna be answering all the comments because there’s A LOT and i’m really sorry for that. i’m beyond grateful for everyone who decided to share their story with me. if anyone feels bad and have the need to talk to someone, i’m gladly gonna listen. but i WON’T be giving diagnosis or anything like that, since i’m still not a professional. one more time, i’m beyond grateful to everyone! :) have a nice day!!