Hear ihave A problem please this is very dangerous 4 OMG help pls?

im a boy and im 16 years old so ihave a cousing and she is 12 years old and yesterday her tolme i love u and im a responsable man so i don like my cousing 4 my g f plz everyone iwant help of u guys say somet/// plz iacet insults all but plz i want ur help