Relationship Advice

I think I have an online crush on this girl I’ve been chatting for a year or so. She’s 18, and I’m 20.
We’re only about 20 miles or so away and it sounds like a realistic enough of a distance if things do get serious.
Both of us are single, obviously, and she’s not into anybody at the moment, yes we do share quite a bit of our girl/boy businesses
I haven’t given her any major sign of my interest yet, neither she has. And even if she has mutual crush on me, she’s extremely shy, so I think I’ll have to do most of the ‘work’ by myself.
What would be a good way to give her hints via online without sounding creepy?
Thanks in advance!