u/AcceptableOpening106

So I 19yr male is getting married to my fiancé 18yr female her dad is supposed to be the one that signs the marriage license and stuff,today I overheard him talking to my brother in law his son about how me and my fiancée are not happy together and he thinks that we won’t last and the only reason we are together is cause we have a kid together which none is true. and my mother in law was standing right beside him when he said and she said nothing so now I’m not sure if I want them at the wedding much less the person that marries us or really apart of our lives and my sons life after hearing that would I be in the wrong?