Im always being acused of cheating

Cierra
OK ik all men are different and everybody is different but if more then two ppl said he abused them how likely is it to be true bc he says he never done anything like that at all I'm his new girlfriend could they just be trying to protect me or lying to me BC they still want him? Here are some weird things I've noticed he always acuses me of cheating or going to leave him for someone else he got very upset with me one day bc a male cashier was being friendly to me so I was friendly back and he said I was flirting and how would I like it if he flirted with another women he always goes thru my phone and when he does find I was talking to someone else he threatens to kill them he talks really bad about my mom BC they don't get along what so ever I can't even hang out with my best friend who is a female bc he thinks I'm going to be some where else with another guy. I Have No Clue On What To Do someone plz help!!!!!!!!!