dear josiewdog123,
well flirt with him alot! everytime u see him try to make inside jokes so wen hes around his girlfriend mention it and laugh, shell get jealous, thats the key, make her jealous. next keep talking to him wear his favorite colors, dont forget to flirt ALOTTT!, tell him bout urself really get to no him. be bestfriends. soon she'll be wicked jealous and brake up w, him leaving him single! make ur move and soon u should be going out(:

hope it helped(: if it didnt i totally understand and tell me what happens!!<3