romantic history; history of one's love affairs
Refers to a person's past romantic relationships and experiences, often used when discussing dating history or relationship background.
She doesn't like to talk much about her romantic history.
I feel uneasy dating someone with an extensive romantic history.
恋愛経験 is a more general term for romantic experience, while 恋愛遍歴 specifically emphasizes the chronological history or record of past relationships.
恋愛史 can also mean romantic history, but 恋愛遍歴 carries a nuance of a personal journey or record of multiple relationships.
Compound of 恋愛 (ren'ai, 'romantic love') and 遍歴 (henreki, 'travels, pilgrimage, itinerary'), literally 'love travels', figuratively meaning one's romantic history or journey through past relationships.