to be a subject of discussion

topic / subject of conversation

to touch / to experience, come in contact with / to press (a button) / to mention lightly

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

all, entirety, the whole, everything

one division, one step, one part of something / one moment, one time / (theater, performing arts) one act, one scene

one slice or cut of something / (rare) a one-time sexual liaison, a one-night stand

once