Boyfriend problems w fam

When im at my moms my mom won’t let me see my boyfriend. What do I do? My mom says if her fiancé doesn’t agree on certain things I can’t do them. Her so called fiancé says no to everything I ask even if it’s asking to take me to the mall or invite friends over. The answer is always no, no matter what. So what am I supposed to do? He says no to meeting my boyfriend. He says no to letting me see my boyfriend. The only way I can see him is if I go to my dads. I hate my life😭