Sulk over (someone or something) American British phrasal verb
To exhibit a gloomy, sullenly distant attitude or behave in a petulant manner to someone or something.
Kathy has sulked over his husband for forgetting her birthday.
My sister has sulked over me for one week because I didn't buy a new laptop for her as I had promised.
I want you to stop sulking over what happened.
The verb "sulk" should be conjugated according to its tense.
White lie
Ken: Yesterday I lost the watch that my girlfriend presented to me. Should I tell her this thing?
Lily: Certainly Not! Your girlfriend will be angry with you. Children and fools tell the truth.