Do guys imagine the girl they like sexually?

If they do how would you know?
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+1 y
My classmate acted weird like he touched himself through jeans while looking at me and licking his lips he still does that whenever he looks at me he licks his lips and I don't know if he wants to have sex with me or he likes me? ( we are kinda flirting for a year)
Updates
+1 y
He twice take off his shirt when I was the only girl in class. I was about to leave the class because of that he said he is gonna take off his clothes that would be weird if I stayed in class. But when I wanted to leave he said look she is running away and I stopped looked at him and asked what do you want me to do watch you strip but he didn't answered my question and started to strip I was waiting for an answer then he asked are you gonna watch and he licked his lips I said hell no then left
Do guys imagine the girl they like sexually?
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