Take a step back and let things evolve over time.

Love at first sight doesn't exist in my mind and here's why. Love is not at all based on how one feels for someone because that changes over time, it is not always a flame burning brightly. When you care about someone deeply it is far more than infatuation, passion or lust which is a combination of things that one feels very strongly when they are drawn to someone this is what I feel is what many say is "falling in love". There is no "true love" except for that level of commitment and devotion for someone that continues even when the flames of "feeling love" fade. Which they always do - mind you they do return much like the ebb and flow of the tides but when someone is devoted and committed they remain even after that. Because Love is a choice we make.

There is nothing wrong with feeling as strongly as you do for her but don't be led by feelings alone. a strong relationship will take more than that to last. If we are led merely by a feeling it's quite possibly a guarantee the relationship will fail, because no one remains infatuated with their mate forever.

It's quite alright to voice your devotion or even state that you are committing to her exclusively. That alone states more that the three words "I love you" any day of the week.

Just my take on things. I'm sure some will disagree but at the very least I hope you consider them and I hope they help.