回答
・ex-boyfriend, ex-girlfriend・fomer boyfriend, former girlfriend
「前男友、前女友」可以用英語的 ex-boyfriend, ex-girlfriend 或 former boyfriend, former girlfriend 表達。
I want to change my phone number because my ex-boyfriend contacts me regularly.
（因為前男友經常聯絡我，所以我想換電話號碼）
※ regularly（定期地）
It's been over a year since we broke up, but I still can't forget my former girlfriend.
（雖然我們分手已經一年多了，但是我仍然無法忘記我的前女友。）
希望這對你有幫助。
有幫助｜0