How to rekindle a crush someone had on you?

Anonymous
A very long time ago, a guy I worked with had a crush on me. I was naive and did not appreciate it for what it was, or that I felt something for him, too. I was nice to him and never rejected him: he gave me a nice gift when I moved away.

Without going into details, at least some feelings seem to remain. We have recently rekindled an awkward socially distant friendship.

how should I go about reigniting his interest in me? I’d really appreciate advice on as many platforms (in person, phone, video, voice memo, text, etc) as possible.
How to rekindle a crush someone had on you?
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