I can't stop thinking about her. If you gave her flowers and a note and she didn't respond, then she has responded. She said no. I know we are attracted to each other. This is a real turn on.
Eye contact is one of the most primitive and primal attractions among mammals.
It is also easily misinterpreted. It may just be his communication style. So even the chemistry you feel may not be reciprocated by him. You just have to ask. If you care deeply for someone, then that is a pretty big emotional issue.