Do virgo like when people flirt with them when they like some else?

Help me please because my friend j like this boy e that i used to like. and J ask E what school he ges to but E did not turn around and said bed ford high and J kept asking random questions to E but E still think i still like him since he found out( don't ask how) but now I just have feeling for him. We stare at another but he looked mad when J was flirting with him. then i ask him how old he is he turn around ad said 15. i dnt get it help!