"My boyfriend's mother always calls him when I'm with him"

"My boyfriend's mother always calls him when I'm with him"

From a female blog reader:

Hello guys i just want a lil advice from you guys because I don’t know what to do.. Whenever me and my boyfriend goes out and we are having fun his mum will call him home to do something for her. Whenever we are watching movies or having a lil time to yourself she will call him to do something for her. This lady call my boyfriend over 8 times a day I don’t know if because he is the only son she has or what. But she got 3 other girls at the house with her she could ask them to help her when she need help.but she always seems to call my boyfriend for every lil things and I am really getting angry . I want to talk to him about it but I don’t want him to feel like I am coming in between him and his mum.. how do i talk to him about it ?????? Thanks guys…