beside; by the side of; alongside / while; during

primary occupation; main job

to operate a side business, operate multiple businesses simultaneously

a side business, sideline

a restaurant

to run, to manage, to administer

management; administration; operation

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

he; boyfriend