AITAH for possibly ruining a marriage!

I (30) f broke the news to NH(new husband) 28 and NW(new wife) 31, that NH possibly have secret child. Long story short NH ran off on ex girlfriend when discussion of having a paternity test done. NH finds new girl and wife her up without telling her about said child. My favorite part is when I come in and tell NW about the possibility, and text NH when he’s planning on getting it done. Fast forward NW didn’t want to hear me out and that’s perfectly fine, but NH wanted to talk and tell his side. And we all know the drill, NH has a different story so we go back and forth. After all of that conversating we still haven’t reached a resolution, now NW has to make that decision and reach out to the mother to get the full details. Am I the Asshole for telling her and possibly ruining a marriage.