My boyfriend tells his mother everything happening in our relationship, even to the smallest detail?

it seems there is no privacy regarding our relationship... even yesterday i mistakely stained our bedspread with blood ( im on my period and i flow heavyly) so i woke up early to clean it up. He saw me cleaning it instead of he asking me what the problem was? He went to tell his mom that he saw me early this morning doing something on the bed. And his mom asked me what i was doing. i ignored her question, then my boyfriend asked me again, tell us what you were doing.

I dont really know... is there anyone here who has experienced this before? so yes? how did you go about it?
Also is there any boy/guy here who tells his mom everything in their relationship even to the smallest detail? if yes? why do you do so? he
My boyfriend tells his mother everything happening in our relationship, even to the smallest detail?
Post Opinion