In my view this relationship is neither happy nor healthy.
I think it's best if you get out of it before it worsens
Please take some time to read the following useful information:-
Victims of domestic violence
Victims Of Domestics Violence - Requirements For Settlement Applications
Destitution Domestic Violence (DDV) Concession - FAQ's
Just be informed that UKBA state that:-
Domestic violence is any threatening behaviour, violence or abuse between adults who are or have been in a relationship, or between family members. It can affect anybody, regardless of their gender or sexuality.
The violence can be psychological, physical, sexual or emotional. It can include 'honour-based violence', female genital mutilation, and forced marriage.