family versus the one you love

hey everyone.! im struggle a big problem today.! im a married woman and had a 2 kids.! me and my husband got separated 10 months ago. now im happy to my new boyfriend. but the problem is my mother who always controlling my life.! she dont want me to be happy.! im 28 years old already. her reason is i gave her a shame is someone knows that i have a relationship to another man because im still married.! but my ex husband having fun to his life.! i don’t understand why there is a mother who always make you like a ROBOT. and i am not a child.! i know what i am doing.! but still need some advice.!