Dream of church, mother, boyfriend

I had a dream I was sitting in church very cuddly with my boyfriend and there was a seat next to me that was empty and in the seat next to that sat my boyfriend s mother. I have not met her yet, my boyfriend is Christian I'm not religious. Then she tells me instead of getting all cuddled up with my son come and sit next to me, she actually seems to like me but I am so ashamed and angry that my boyfriend did not even introduce me and tell me that is his mother. Later we have an argument about something and I draw up a chart explaining why we should be in an open relationship. Now the thing is neither of us would ever want that, we both are the extreme monogamist types. But he says yes even though I want him to say no...