<human>: Can you summarize the given text in a few sentences?

[M] 21 here recently broke up with [F] 21 Gf. We were together for 9 months and we broke up about 4 times for a day or so each time. And mostly because of me. Let me describe her. An amazing girlfriend. That's about it. Every time I broke up with her was for different "reasons" but the real reason was because I felt I was only with her because I knew she would never cheat on me and she was such a great girlfriend. Is that wrong?  She is the perfect girlfriend, I just don't think she was perfect for me. We get along great but we do not have the same interests. She does not challenge me and I feel like there could be some one better suited for me. I look at the world a lot different then her and feel someone might understand me better. I been reading a lot of things saying 'if you find a girl who does this this and that don't let her go' and she does everything. but then I feel like I'm just holding on because it would be dumb to let her go. She makes me happy. I'm comfortable around her. She genuinely cares about me. My family loves her . Always makes sure I eat. And just basically takes care of me. Am I a selfish for wanting to see if I have a better connection and find more in someone else. I really do not want to make the biggest regret of my life. I wanted to talk to a couples therapist, or anyone but don't have that money right now. So I came here for any help I can get. I literally been going crazy trying to figure out if I'm an asshole , if I should do everything I can possible to make it work. So any feedback will be appreciated. I will pm anyone with more questions. Thanks for reading.
<bot>: My ex was the best girlfriend but not sure if she is the best for me. Don't want to make a terrible mistake