I know you don't need approval, this is a place to vent and share opinions. I've told you my experiences to help you decide what you should do,just make sure that your decision is right for you.
I've been in that situation and didn't act on it, I got over her eventually.
But I've also been in the situation and acted upon it, that one ended badly and I lost quite a few friends because of it.
Iceland don't use the euro you twat, it is a wee bit expensive but it's worth it. Such an amazing country especially if you're looking for something different.