Why did he stare at me like that?

The guy I’m interested in invited me out to dinner. He paid, opened doors, pulled out my chair for me, and even opened his car passenger door for me later. Anyway, during the quiet periods of our conversation, I’d look up and he would be staring at me with this soft dreamy-like or dopey eye contact accompanied by a soft smile. When I’d meet his gaze, he’d smile and or softly laugh because I nervously giggled. I’ve never seen him make this expression before and want to know what it generally means in male human behavior.

Why did he stare at me like that?
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