noun
purely sexual love; highly sexual love
Refers to a relationship or attraction that is primarily or intensely sexual, often contrasted with romantic or platonic love. Slangy, modern term.
あの二人の関係はエロ恋で、恋愛感情はないみたい。
Their relationship seems to be purely sexual, without romantic feelings.
エロ恋を求めているだけなら、そう言ってほしい。
If you're just looking for a highly sexual relationship, I wish you'd say so.
肉体関係 is a more formal or direct term for a physical/sexual relationship, whereas エロ恋 is slangy and carries a nuance of love or attraction framed as primarily sexual.
Compound of エロ (ero, 'erotic') and 恋 (こい, 'love'). A modern slang coinage.