My (20F) and boyfriend (21) like to pass time on the phone by playing multiplayer video games (Mario kart, Minecraft etc). Being a competitive person in the past I would always get upset whenever I lost. As of late we started playing the game ‘Among us’. And every time we play it would always make me upset when he got to be imposter and I wouldn’t. For the 10 games we would play he would be imposter for 7 of them (mind you this is not up to him it’s a randomized generator).  I would get mad whenever he is “it” but today things took a turn for the worst. I lost it badly. I was upset to the point where I felt my face grow hot with rage. I yelled at him and gave him so much attitude for the entire time we were playing. I was being a complete sore loser and throwing what could only be described to me as a tantrum. I almost hung up the phone on him to “punish him”. The worst part? I KNEW I WAS BEING UNREASONABLE AND THAT ITS A GAME AND IM OVER REACTING! Yet I couldn’t control it. My mind even went as far to think that I genuinely hate him for it- except I know I don’t because he is the best thing that has ever happened to me and I love him. And he can’t control what the game picks for him. Afterwards I felt embarrassed to ruin another fun lighthearted game, i apologized for acting the way I did.I don’t want to keep doing this. Any advice?