Your history is unclear to clearly differentiate the symptoms
But since you have said you had severe traumatic hits in your head in past, it may be a reason.
Frequent heavy hits in head is dangerous, this is more common in boxers. There will be subdural hemorrhage
, when pain is associated with impaired mental ability, memory it may be neurological due to traumatic injury
You need to consult a neurologist
, he may suggest you to get an CT scan
and for further information he may also ask you to take a MRI scan.
Please try to avoid such kind of relationship or if it is not possible try to get counselling
for both of you.