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

Hi /r/relationships,

little backstory: Me and my GF have been together for a little over 3 years now. After a year she broke up with me since she found i wasn't mature enough. a month later we started seeing eachother again and came back together. But I really feel it has come to an end on my side now. Overall it's a standard first "real" relationship, It felt like she is everything i'd ever need and i couldn't think about a world without her. Problem i've always had is she was always really overly attached to me, which i loved the first 2 years but i seem to find myself getting annoyed by it more and more. Thing is, i feel like i still do love her. Not sure whether i love her as just a friend or as my GF..

Now tbh i've talked about this with friends and they all seem to say that with the amount of doubt i have about my relationship atm there is no point of continuing it the way it is. I've tried talking about the things i feel is making us grow apart and it's all god for a week or 2 after that but then everything seems to reset and be like it was all along.

Now since 2/3 months i'm really considering breaking up. I just don't feel like it works this way anymore for me but she is still so damn in love with me, and keeps saying she would be nowhere without me. i think the thing that is keeping me from moving on is just that i feel so damn bad about leaving her behind (especially since she broke up with me and i know how i felt at that moment). I just don't know if it is the right decision to break up.

Honestly i'm at the point now where i could go to her house now and break up or let it stay the way it is right now. Not knowing which will make me happier.

Now /r/relationships, please enlighten me with your advice because i'm stuck and i just don't know what i should do.
<bot>: Relationship of 3 years, don't know wether to break up or not due to not knowing if it's the best thing to do and feeling very bad for leaving her behind.