彼は彼女にべたぼれだ。

he; him; his; boyfriend

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

she; her; her; girlfriend; sweetheart

at (place, time); in; on; during; to (direction, state); toward; into; for (purpose); because of (reason); for; with; by; from; as (i.e. in the role of); per; in; for; a (e.g. "once a month"); and; in addition to; if; although

covering; filled in; gapless; all over; complete; total; cliched; clichéd; hackneyed; corny; predictable; plaintext; solid printing; solid typesetting; contact print

to dig; to excavate; to hollow; to delve into; to dig up (e.g. vegetables); (for two men) to have anal sex

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