oath, promise, swearing, vowing, abjuration, pledge, word of honor

take an oath, make a sworn statement, swear an oath

talk about, tell, narrate / recite / show that there was something

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

truth; reality / truth; reality

a female given name / a female given name / a unisex given name / a surname

talking about oneself (especially, when the audience is not interested)

(idiomatic) to keep a secret when asked about it, but let it slip inadvertently when chatting on another occasion