How do I break up with my girlfriend without hurting her too much?

I've been with my girlfriend for over two years however recently while I've been home from uni (where she lives) I've felt like we're drifting apart and I don't have romantic feelings for her anymore. I'd like to remain friends with her as she's a lovely girl but I don't quite know how to end the relationship. I don't want to cause her a lot of pain. Any advice? This was posted from The Student Room's iPhone/iPad App

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