understanding, comprehension / appreciation

difficult / hard, probably impossible

complex sentence (sentence containing one independent clause and no dependent clause)

to feel / to sense / to experience

understand, comprehend / appreciate

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

(idiomatic) to feel inferior, to feel small

impossible to understand, utterly confused