Something wrong with my boyfriend

So he had placed a bet on the game so he was in the room watching the game. I went in the room to get a drink out the mini fridge. So when I was coming out I smacked hid behind jokingly which I always do it. So he came out the room and said I was janky and I’m the reason why he lost the bet because I came in there messing with him. I thought he was playing until he went on and on and I saw his face. So he took off in the car mad and texted me and said I was janky asf whatever that means. I think he has mental issues. That’s not normal. Keep in mind that it’s not a console game or anything, it was a actually basketball game on the tv. I told him he needs to seek help for that.