PLEASE HELP ME 🥳🥳🥳🥳🥳?

So there is this guy who would stare at me with the corner of his eyes for the past week and then the last day of school (we are both seniors) he would just stare at me the whole period. After the class period, I was waiting for my friend and I saw him walk out the door and I asked him for his Snapchat, and he kept laughing, and then he gave it to me, was he nervous or something else? He seemed so happy after & when my friend came to me he was smiling at me. Did I make the right choice or not to ask for his Snapchat?
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And also when I put my Snapchat on his phone he was like “oh”, & what does this mean?
PLEASE HELP ME 🥳🥳🥳🥳🥳?
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