Going to try to keep this as short as I can.
She has been married for 8 years. Her husband works a lot. Some days 7a-7p, working at home during breakfast and dinner, and sometimes on the weekends. She said things are fine, just not as good as they were when they got married.
Her brother in law has a 5 year old kid but isn't married and has most of the custody. The baby's mom has gotten a little more mature since the kid. He has been seeing another woman, who is kinda bitchy/high maintenance. No one in the circle of friends or family really likes this other woman. The mom has a decent job, is younger and is better looking than this other woman. This other woman has a slightly better job, is older and has two kids of her own. If they had to choose one for him to be with, they would prefer the baby's mom.
My friend feels like there might be something between her and the brother in law, but doesn't know if she should act on it. They get along really well and the kid really likes her.
I've told her that this would probably completely mess up the relationship between the brothers and her in-laws (she gets along with them really well), and maybe relationships with friends everyone has. I get that you only have one life to live and you should be happy in it. I just don't know if it's worth risking, especially since she doesn't know how he feels. I can only go off what she says and I see. It does seem like they are stuck in a rut, doing the same thing week after week.
Not sure if it matters, everyone is between 30-45.
I know this might not be enough information to really make the best recommendation, but it's all I have.
So, what would you tell her?