<human>: Can you condense the text into a few key points?

I don't think I'm in love with my girlfriend. We've been together for four years while she's studied her masters in the UK, We met here, I'm English.
When she's done in July we aim to live in her city of Stockholm Sweden. I'd like to go for myself regardless of the relationship, but I will mostly rely on her and her family for a while. We've had our problems, when I've realized she's not the one for me in the past for example, but we have so far worked through it. She is a great person in every way, a huge support for me and there are no glaring problems. I'm no longer attracted to her, I don't think I have been for some time.
I feel like I may not be happy long term if we stay together. I'm always contented by our lifestyle and her company, but I want to be with someone I'm crazy about. Will I be unhappy if I don't leave? Will I be taking advantage by moving and using the support of her and her family to set me up? I don't know how I would ever break up with her either, she doesn't deserve the pain. She wants kids and a family soon and I don't really care for that right now, I've just gone along with things so far.
<bot>: Four years in, not in love, should I move country with her? should I end it? Should I wait for someone I'm crazy about?