Should I tell her how I feel?

I meet this beautiful girl in my math class in college. She gave me her number and we started texting and we have studied together. we always sit next to each other and i always look forward to talking to her. I asked her out on a date and we ended up smoking and going to get something to eat. Even though we were both high, it wasn't awkward and i enjoyed it. i gave her a hug when i left. since then i just walked her to her car. The problem is we are both busy and she lives about 1hr away from me. Next time i walk her should i tell her how i feel? How do i know when its the right time to kiss her. My friend told me to just do nothong and i think thats terrible advice. thats why im on here.
Should I tell her how I feel?
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