You've gone quiet OP, hope you are OK 
It may seem harsh but if you have decided - for whatever reason - to leave things as they are, he will take it as permission to up his game next time.
It won't be a bounce on the bed or a glass of water thrown over you, it will be a smack across your face at the very least.
You will now be afraid to 'challenge' him in any way (by remaining silent for Christ's sake, the wanker that he is 😡)
You will walk on eggshells from now on.. The aggression will escalate quickly and there will be a shorter time span between each occasion.
Can I ask how he would have reacted if you had retaliated with a glass of water thrown over him? 🤔