wow!! this sounds exactly what i have gone through for the last 6 mos with a Gemini woman.
she decided about a month ago she needed space and needed to date other guys. we have done the same thing. had our fights but right back together. I just cannot push myself away. she told me on wednesday she found another person she has feelings for. it nearly killed me. we went out Saturday night for what was suppose to be our final night out together. We were both in tears when I left her. I have been told before to leave her alone and she will be back but never have been able to stay away from her. very destructive for me. I think this time I will stay away and see if she comes back. Geminis are suppose to be that way so we will see.
best I can say is give them space and don't destroy yourself over it like i have. i am miserable but determined I will get through this. I have never felt love like this before in my 54 yrs of life and hate to think i might have to wait another 54 to feel it again. Read everything you can about gemini and soak it all in. if they are a true gemini then you can bet what you are reading will be true. Good luck to you. dont think it is your sign or the combination. I think it is just the way gemini is and how attracted we are to them. they are exciting!!