Mom's pissed because living w/boyfriend

She won't really talk that much to me anymore because I moved in with my boyfriend. She was fine with me living with my friend, but he started getting really allergic to my cats so my boyfriend offered his place to me so I took the opportunity. I'd rather live in a cardboard box than move back in with my folks. I still have my job, my boyfriend and I are doing better than ever, I'm happy, yet she still has an issue. She was fine with me living with my ex even though he was a sack of shit. I'm so annoyed with her.