an umbrella or parasol shared by two people, which alludes to a romantic situation / (figuratively) an infatuation between two people / (slang, figuratively) a love affair, a romantic relationship

for the first time, first

(dialectal) for the first time

for the first time

to forget / (auxiliary verb, after the continuative form of a verb) to forget to …

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

one day

forget oneself / be beside oneself