@Jacqueline34
You are not 'slow'.
You are not stupid.
You matter.
Unfortunately you've become embroiled in a 'relationship' with a very nasty 'man'.
This was probably, in part, because of the early introduction to ''dysfunctional relationships'' within your family home, and the inevitable difficulties that caused you to be less able to ''spot'' problems early in new relationships.
However, you are now an adult who recognizes that the behavior of your partner is upsetting and scaring you. You know that 'something' is wrong, you just need a little guidance to verify what it is that is wrong.
So, your partner is using alcohol as an excuse to openly abuse you.
Calling you names is abuse
Deliberately causing you upset/distress is abuse
The fact that your crying/being 'defenceless' makes him furious is abuse
None of his abuse 'stems from nothing' !
It all stems from his utter hatred of you and probably of women generally.
He even 'struggles' to talk to you without his hatred 'slipping through' in the tone and language he uses to you ffs 
He wants you to be scared and distressed because it gives him pleasure. He only has you around so that he can abuse you.
Waste no more time or energy on this horrible, wicked and nasty 'man' thinking that ''deep down'' he actually ''loves'' you, because he is incapable of love.
Please leave him asap. Contact Womans Aid if you need help with leaving safely ans please do the Freedom Programme, because it will really help you to recognize his abuse (and will help you develop better relationships in the future).