Is it really difficult to maintain love marriage? I want to marry my gf but having fear for it?

I have a 3 year realtion with my girl friend. soon we are going to marry but dont know why there is a fear rising in my heart? Although she loves me a lot than too She is not fully satisfied with me. I cant experess her this fear. She cant be live without me. I never want to leave her but ........why such negetive things coming to my mind? plz guide me.Is it really difficult to maintain love marriage? I want to marry my gf but having fear for it?
Its called cold feet. Everyone wonders if its right. If you love her and you trust her, most things can be overcome. Keep a good line of communication. If you really love her, talk to her. She might be feeling the same thing. Or is it that you're not ready? What's the rush? If after talking to her, you still have doubts, wait a little longer until you're sure. Is it really difficult to maintain love marriage? I want to marry my gf but having fear for it?
It's called Cold Feet, totally normal. I'd be scared for the person that doesn't have any hesitation to get married. At least you'll be entering the marriage with realistic expectations. Good luck buddy.