only interested in someone for sex
Describes a person whose sole interest in another is physical/sexual, not romantic or platonic. Often used critically.
Apparently he approached her just for her body.
A relationship based only on physical attraction doesn't last.
下心 is a broader term for ulterior motives, not necessarily sexual. 身体目当て specifically means sexual interest as the primary goal.
遊び can mean 'playing around' or casual dating, but 身体目当て explicitly reduces the interest to physical desire.
Standard kanji spelling; 身体 is the more formal kanji for 'body'.
Simplified variant using 体; common in casual writing.
Compound of 身体 (body) + 目当て (aim, purpose). Literally 'body as the aim'.