In Vietnamese, "I love you" is expressed as "Anh yêu em" when a male is saying it to a female, and "Em yêu anh" when a female is saying it to a male. It's important to note that the language is gender-specific when it comes to expressing love.
When someone says "Anh yêu em" or "Em yêu anh" to another person, it is generally a romantic expression of love and affection. The phrase is commonly used between romantic partners or individuals in a romantic relationship.
In Vietnamese culture, expressing romantic feelings openly is not as common or as openly displayed as it might be in some Western cultures. Vietnamese people, especially in more conservative or traditional settings, tend to be reserved about expressing affection in public. However, in private settings or in close relationships, saying "I love you" is a way to convey deep affection and attachment to someone else. It is considered a powerful and meaningful expression of love, just as it is in many other cultures.