combat stress reaction, shell shock (psychiatric condition characterized by fatigue caused by battle)

a battle, a fight, combat

suffer, struggle with, be tormented by

stress (emotional pressure)

to fight, to battle

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend

chemical reaction / reaction, response / feedback

to react chemically / to respond, to react / be responsive, be sensitive

he; boyfriend