Girl is talking to a friends mom. Friends mom is calling the girl “the responsible one”. Girl argues that her friend can be responsible. Friends mom calls bullshit

Rory was maybe her husband’s son. When he found out about Rory he started spending time with him. After finding out he is not the father he decided to stay in the Rory’s life as his dad.

Rory is nice but not a responsible child. So saying he is would be a lie.