I've been dating this boy for a couple weeks but last night he did something that scared me. So he rides a motorcycle and he parked it outside my apartment when he was over for a visit. Then we were on my bed and the alarm on the bike started going off, so he jumped up and ran over to the window, then opened it and saw some guy apparently touching the motorcycle. (I didn't get up, so I didn't see). And he screamed out the window at this guy, "Get lost motherfricker before I smash your skull open" or something like that. The anger and violence in his voice was just deeply scary to me. Previously I thought this guy was sweet and friendly, but to find out that he has this capacity for violence? Is this normal?
What made me even more uncomfortable is that when he came back to the bed, he was acting like he wasn't even mad. I think he saw the look on my face and then he said something like "oh haha don't worry I wasn't really mad, I was just using a scary voice to scare off the thief." But I don't know if I should believe this, because isn't that kind of psychopathic?? Who can just flip from screaming violent threats to being normal in a split second? And who would say something like that unless they wanted to really hurt another person?