Provide the theme summaries for the following conversation: 

Anna: Why is your ex calling me?
Brian: What?
Brian: when did she call you?
Anna: yesterday
Anna: at about 6pm
Brian: I have no idea why she would!
Brian: What did she want
Anna: she wanted to talk about your son
Anna: and how she is worried about me coming into his life
Brian: gees 
Brian: I'm sorry I'll talk to her

Summary: 
Brian's ex called Anna yesterday at about 6pm. She wanted to talk about his son. She's worried about Anna coming into his life. Brian will talk to her later.