my GF , and son to be wife , is coming to see me in few weeks ?

Just be yourself and do not pretend to be somebody else. Take it easy, relax and let all the things just flow as it should be. I guess, try to buy a bouquet of flower (red I suggest or light pink) and surprise her. And then let your heart speak and not your brain. God bless you and on your upcoming wedding day. Pls keep me posted my friend because I do hope all will turn out good between the two of you