My boyfriend has a 2 year old with his ex. A few weeks ago the ex informed him that her sister had become a major cocaine addict. Instead of getting treatment her parents made her move back home. The sister has a 3 year old child. We have no proof the ex was allowing the sister to watch the child my boyfriend had with her, but everything we know tells us that she was. This past weekend we learned that the sister was watching the child while the ex is at work or out at the local bars herself. My boyfriend doesn't want the sister watching his child but his ex will not listen to his concerns. There are rumors the sister is still out "partying" and my boyfriend is concerned not only for his child's safety but the safety of the sister's child. What can he do since the ex doesn't seem to care about the safety of the child? Is the only way to ensure the safety of the children to call CPS? He lives in Texas.