Should I message him?

Okay, so there is this guy on my bus who is two years older then my and graduates in one month as he is two year/grades above me in school. Meaning this is probably the last month I am going to see him ever on the bus. He doesn’t go to my school yet he all the time looks at me whilst on the bus and even told me I was leng before. Whilst his group of friends constantly looking at me aswell. Other then that, not much further interaction with this guy other then the constant staring. I really like him though. Because us girls can find literally anyone online, I was able to find his Instagram, Snapchat and TikTok account. So, do I message him on any of these social medias? Or add him on snap by search? Should I do it now or over the summer? Will he find it creepy HOW I found his socials? What do I say? Or should I just let it go, move on and save myself the embarrassment?
Should I message him?
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