“成配偶”常见的英文表达可以是 “become spouses” 或 “get married and form a couple”。
“become spouses” 较为简洁直接，明确表达成为配偶这一状态。例如：After years of dating, they finally became spouses.（经过多年的恋爱，他们最终成了配偶。 ）
“get married and form a couple” 表述稍详细，不仅提到了结婚（get married），还说明了由此形成夫妻关系（form a couple） 。例如：They decided to get married and form a couple, starting a new chapter in their lives.（他们决定结婚成家，开启人生新篇章。 ）