Hello
(Warning: I have no idea if this will be useful to you...)
What's the worst thing that can happen? Being told "no?"
It is true when people say you have to love like you've never been hurt before. You can't carry past mistakes and hurt into your next relationship, otherwise it will never work out. You have to put everything on the line and give it your all.
But listen to your gut is telling you... Is this person on the same page as you? Are her "walls" soft enough for you to break down with patience, support and effort without breaking yourself? Would you regret not sharing your feelings or sharing your feelings more?
In my humble opinion - I don't think you can truly love someone without sharing many thoughts, feelings and/or experiences (physical or non-physical) together. So no, I do not believe you can be madly in love with someone when you first meet them other than being sexually attracted.
Don't get too excited or anxious about this. Just enjoy this phase where it's full of butterflies and be her friend if you really care about her. Love isn't always about being their "bf," it's about being there for someone regardless of your relationship status.