Is this a good way to get bigger ?

im 13 and i need bigger s to impress a guy so i decided i would gain weight. i was 50 kgs and an a cup so 4 months ago i quit basketball and ate mcdonals all the time and i went to 75kgs and now i have d cups. im starting to lose weiht and im 72kgs now so its going good. is there any otha ways that work? lissie xoxoxox