This will depend on both your relationship with your mother, and your relationship with her boyfriend.
If you have been antagonistic towards him, you mother might not be inclined to believe you.
If your relationship with your mother is close then you will need to be able to tell her why you haven't told her before now. You'll probably be able to tell her that you thought it was none of your business, or that there may have been an innocent explanation as to why he was with the other woman, and that you didn't know what the basis of the relationship between your mother and him was - perhaps they allowed each other to see other people.
If you are not too close to your mother then I think it might be best to tell her that you felt that telling her before now might drive you both further apart. That she might have felt that you were interfering in her life unnecessarily and possibly with an ulterior motive.
Because, in girl logic, another girl (who is not the boyfriend's sister, mother, or other female relative) answering their boyfriend's phone typically means that he is cheating with this other girl, or he's actually been cheating on this other girl with her.
Yes - good and hard
Break up with him, because he is cheating on you.
I am sorry dear, but this is between your mother and her boyfriend. Your mom is an adult and can look after herself. If you are concerned then talk to your mother about it. If you don't like her boyfriend let her know this as well. If your mother refuses to talk to you or you don't like her boyfriend then talk to a relative such as grandparents or an aunt.
Assuming the question refers to a DREAM of your boyfriend cheating on you with your mum, it means that you have some very serious doubts about this boyfriend. At the very least, it means that at some level of your mind you realize that your boyfriend may be more interested in your mother than he is in you.
Your ex-husbands mother in law would be your mother...he already left you so id say yeah
It depends on how he feels about her. I kiss my younger stepbrother on the cheeks. Does that make me a cheater? ANSWER: God no, it's like kissing your own mother, sister, grand mother..
* If your father is widowed or divorced then it's his private business and you will have to trust him as to when he decides to tell you that he loves another woman. If he is cheating on your mother then tell your father you think it is wrong and to either leave your mother or stop the cheating.
well, justin's real mom pattie malette dosen't have a boyfriend, jeremy bieber and pattie broke up when justin was about 10 months
Answer If the mother isn't in the picture as you say and he's single, how can you see that as cheating, who is he cheating on?
If you give your boyfriend's mother a Mother's Day card, you can simply say "Happy Mother's Day."
well u can get custody of the child