My boyfriend got sum chick pregnant (plz help)?

me n my boyfriend have been datin for almost 5 months n i love him to death but jus recently i found out from my friend dat he got sum chick pregnant n shez 8 monthz but i think she already had the baby but wen i ask him about he jus deniez it n im like 99% sure that its tru...so wat do i do? do i break up wit him r wat? n dnt even kno if he still with her