You want to explore new
islands, but you don't want to lose sight of the
shore.
Security vs risk.
You want security, your current relationship should be able to
provide.
If you accept higher risk, you may find someone better, although
it's also equally possible to end up with somebody worst.
You cannot have the best of both world, for if you attempted to,
you will probably encounter misery. I won't say that you don't love
her at all - I would say that after one year of dating, you realise
that she may not be the one you are seeking (Gemini mutable traits
surfacing le) 
Cheers
