This marriage sucks…

If your wives 13 yo son attacked you, what would you do? So I said something that must’ve upset my wife’s 13 yo son, he weighs 300 lbs and is like 6 ft.. he pushes himself on me on sofa and starts to choke me! 😮I naturally defend myself to get him off me.. In the process his shirt gets ripped and he gets scratched with my nails since I haven’t had time to cut them… would you leave?? My wife calls the cops on me then when cops cop she tells them we were just arguing?! I got attacked and I’m the bad guy for getting a 300 lb kid off me for jumping me on the couch and choking me… I need advice.. I feel I should go