彼の話はそうとう大袈裟だ。

he; him; his; boyfriend

indicates possessive; nominalizes verbs and adjectives; substitutes for "ga" in subordinate phrases; (at sentence-end, falling tone) indicates a confident conclusion; (at sentence-end) indicates emotional emphasis; (at sentence-end, rising tone) indicates question

talk; speech; chat; story; conversation; discussions; negotiation; argument

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

befitting; becoming; worthy of; proportionate; in keeping with; suitable; considerable; substantial; to be worthy of; to be proportionate to; to correspond to (in meaning, function, etc.); to be equivalent; extremely; considerably

grandiose; exaggerated

be; is; indicates past or completed action; indicates light imperative