Is he two-faced? Or what’s up with him?

My boyfriend is very caring towards me, in front of my family and others—he makes sure I eat, drink and sleep. Takes care of me...in a sense. He’s very nurturing. But, um...

Once we’re no longer in public, and it’s just us alone. He’s gets very physical, overtly sexual. Like hitting my butt when he walks behind me, harshly biting me in the thigh, or butt, or the cheek even when I tell him, “no no no, too sharp, your teeth hurt. That’s painful.” Calling me sexual names.

When he gets playful...he gets too playful. Like he gets out of control. Wild maybe? And, that aggression scares me. And confuses me, because the guy who will wipe his face, and mine after we eat, or the guy who will tell me it’s okay, and comfort me—and ask me if I’m okay all of the time...has this other side to him. A side that’s completely different compared to what he shows in front of my family.