Ex-Boyfriend Crush!!:(?

Ok my ive dated this guy around 9 times and ive ben the one to break up with him.But last year we went on a date and i walked out with my friend and now his parents hate me tey said i cheated on him!But i liked him last year and got some people to ask him out.And the first time he said mhm(like a flirty way).Then my otehr friend asked him on the bus when his brotehr was tehre and he said no leave me alone but then his brotehr said yea you do you told me last night.but this year hes said no he dont liek me to my cousins but does he just sayin tht or does he really like me?what should id do as far as dressing, make up,acting?HELP!!!