Well if Ты aren't sure I'd go with ' I'll think about it' and give him или her a hopeful smile-ish face but if Ты already did then if he really likes Ты he will not really be patient and again and again. If Ты heard rumors или his или her BFF сказал(-а) he was gonna ask u out I would say yes if I were you. Hope I helped!! - PBB ;D
"if i'm able i'll go out with Ты i would!but i'm afraid my dad will find out and,well, he's a little overprotective. if Ты really do like me, let's wait until college, okay?"