Sounds like you two have the foundation for something very special. But of course there's a risk to telling her your feelings. Do you want to be sexual with her? Or just tell her your feelings? Be honest.
Maybe you could tell her something like this: "What would you do if a friend said she loved you as more than a friend?"
Get her response, if it's positive, continue like this: "Well, I love you as more than a friend, but I don't want you to freak out about it. It's ok if you don't feel the same, but I'd like to know if you do feel the same." Be very specific. Clear communication here is critical.
If you are interested in getting physical with her, then continue: "I'd like to show how much I care about you by being more physical. Are you interested?"
I have a long time interest in psychology, specializing in relationship dynamics for 30 years.
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