Can someone help me pleaseeee?!?!?!?!?!?!?!?!?!?!?…

okay i thought this kid kinda liked me and was considering asking me out but hes changed and started flirting with other girls and its getting me kinda jealous and it use to be our little thing to talk secretly during cles but now he does it with this girl McKenna and she isnt even pretty and i dont get it what i am asking here is one what can i do to see if he likes me without me asking