day 1 Thanksgiving break

today is my first day of fall break so far so good but it might not stay that way im. you see im going to my grandmas later and she lives with my uncle who has a girlfriend that has 2 sons. her first son is john hes 18. her second son is brandon he is 16. well brandon has a friend named kyle that is his age and i kinda like him but him my best friend have history. do u think it would be the wrong thing to do if i made a move, because when we both first met him i called dibs but she started talking to him behind my back. so i dont know if it would be ok to make a move considering she stole him from me or to just back off. she still likes him but he cant stand her. and i think i might have a chance ADVICE?