Love tips

I have a friend he is luv by a girl,name joy,dis girl truely luv d boy,but d boy gives less attention to d girl,dis has really cause heartbrokon to d girl up to d extence i and d girl became so close people started thinking i was dating her,i soldily develop interest in her,not because i wanted to have advantage of her but i reallalized i am in luv with her,i don't know what to do right na.