you asking for? are you seeking comfort that youe took the right decision or are you regreting inside you turned down the offer?

There is great difference bteween the two, no one can help you take a decision because no one knows how much you are in love, how much you are currently eraning, what was the offer for, was it a career move or just a move, how much your GF loves you, if she loves you so much why did she not agree to go with you ...etc

when you have the right answers for all the above you will know if you took the right or the wrong decision in that time .. but I guess time will tell

Good luck

"The best way to predict the future is to create it".