'Novios' can't really be translated into English, but here are some suggestions: They're boyfriend and girlfriend. They're dating. (early stages) They're going out. (more serious) They're a couple. (more serious still). They're an item. (informal) You can also say 'They're engaged' if there's a diamond ring and a wedding planned.

Another couple ways are : "They are together" "They're going steady" :)

In the Filipino language ( which has Hispanic traits) Nubyo is often translated as Couple. "Sila ay magnubyo." They are dating or They are a couple. In the phrase: Ellos son novios. I believe that Novios should be translated: Couple.