<human>: Give me a shortened version of the text

Boy, do I hate cliches, but can "it's not you, it me" be a perfectly legitimate reason to break up a relationship?

I've (22 f) just broken up with my boyfriend (23 m) of just over a year. 

I've never been good at relationships, they always end up one sided, with me investing very little of myself into it. 
I understand the concept of getting over the "honeymoon" period, but I see other couples that have been together for years, and they still hang out and are in love with each other just as much as they did before. I never seem to get that, am I doing something wrong?
I should add that I've been diagnosed with clinical depression for about 10 years now, and very rarely feel any strong emotions towards people.
<bot>: My boyfriend deserves someone who loves him. I do not feel like am that person. Is it wrong to break it off for his benefit?