New living situation upsets traditional parents

DEAR HARRIETTE: I moved in with my boyfriend recently, and my parents are furious. I come from a traditional background where living together before marriage is considered shameful. My mother won’t speak to me, and my father told me he didn’t raise me this way. I understand their values, but I think this is a step toward building a healthy relationship before marriage. Still, their disappointment hurts, and part of me feels guilty for letting them down. How do I balance respecting my parents’ beliefs while still living my own life? Is there any way to bridge this gap, or do I just accept that we may never see eye to eye?