彼の言うとおりだろ思う。

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

to say; to utter; to declare; to name; to call; to go (e.g. "the alarm went ping"); to make a noise

avenue; street; way; road; coming and going; street traffic; flow (of water, air, etc.); transmission (of sound); reach (e.g. of voice); fame; reputation; popularity; the same status or way; as (e.g. as expected, as I said); understanding; comprehension; counter for sets of things; counter for methods, ways, types

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

to think; to consider; to believe; to think (of doing); to plan (to do); to judge; to assess; to regard; to imagine; to suppose; to dream; to expect; to look forward to; to feel; to desire; to want; to recall; to remember