He says it’s ‘play-fighting’

I tell him it hurts and he tells me to stop being so sensitive and that i need to grow up I’ve showed him the marks he’s left and he just laughs it off tells me ‘ I must bruise easy ‘ like it’s my fault. It’s not all the time... it just happens and I don’t know why he calls it play fighting but he always starts it always goes too far with it. His punches hurt ☹️ they feel way too real to be in anyway ‘playful’ he’s choked me out his knee on my chest until I beg him to stop. I’ve pleaded him to stop but he won’t I don’t understand why he’s doing this

Recently he’s started biting me and then the other day he just randomly punched my in the chest and he laughed /:

Does anyone have any advice just need to talk about it :(