Definition: Given a real-life anecdote of a complex ethical situation, generate a suitable title that describes the main event/root cause of the situation. Imagine that the given text is a social media post, and you have to write the title of the post, so the users can decide to read the main text or not.
Input: No matter what, this situation is going to get messy. TLDR at the bottom. 

For context, my (23F) cousin (25f) has a lot of issues. She has always been a pathological liar, has trouble making decisions and being responsible, etc.

About a year ago, my cousin was sleeping with multiple people. I have absolutely no issue with that, she was not in any official relationships. She ended up becoming more serious with one of the dudes, and became monogamous. 

Shortly after, it was revealed that she was pregnant. Her boyfriend wanted to take responsibility, and asked her to move in and marry him. They ended up getting married near the end of her pregnancy. 

Here’s the tricky part. We discussed it near the middle of her pregnancy, and she told me that she had narrowed it down to 2 potential baby daddies - one of them (husband) is white, the other is Asian. She is also white. She also told me (keep in mind - pathological liar) that both guys were informed and amicable, and the hospital had done a ‘blood typing’ test but it was inconclusive because both guys have the same blood type. Firstly.. not sure that’s a thing? And secondly, they would not casually do a paternity test on a fetus, it is very dangerous. 

My brand new nephew is less than a month old. When he was born, it seemed very unlikely that he was white. To be fair, all babies look like little aliens, and often skin tone changes drastically. However, we have had Japanese, Korean, and Chinese people note that he looks specifically Chinese (which is where potential baby daddy’s family is from) - I feel like folks with Asian backgrounds would be able to tell better than my white family. 

My cousin’s sister, who I am very close with, and I have been very torn. We both want what’s best, and do not want to cause a divorce/etc for my cousin. However, we feel it is her husband’s right to know, as he will figure it out eventually, and it is the birth father’s right to know that he has a baby out there.
I don’t want to betray my cousin’s trust, but at the same time I would not technically be at fault because she has explicitly told us, multiple times, that everyone is aware and amicable. I want to be proactive as I feel like the situation will get worse, the longer that time goes on and it becomes more obvious that the child is not white. I feel the bio dad is missing out on an important time in the baby’s life. If it makes a difference, I am quite confident my cousin will reach out to him for child support, if her husband leaves her. 

WIBTA for casually mentioning the situation in front of the husband, perhaps by noting it is admirable he has stuck around? And WIBTA for anonymously contacting the baby daddy and letting him know about the situation? 

TLDR: White cousin has just birthed Asian baby. Husband is white. Should I tell husband and baby daddy what’s going on? 

telling my cousin's ex-boyfriend that she had his baby without telling him