He keeps fidgeting around me and brushes his fingers against mine?

I noticed that this guy in my class would brush his fingers against mine whenever he'd pass me my test tubes. Or just a couple of weeks ago, I noticed that he would run his hand through his hair and looked me. Or he would fidget in his chair. Sometimes I'd catch him staring at me from my peripheral vision. I wanna try to ask him for his number, but I'm kind of nervous to do it. It also turns out he lives on the street as me as well because he drove me home once too. I don't know, I'm confused. Men are a strange set of species that I rarely interact with until this semester.
He keeps fidgeting around me and brushes his fingers against mine?
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