My daughter's boyfriend's birthday. As a mother, should I send a message to say hello?

As a mother, you can choose to send a message to greet your daughter's boyfriend and express your concern and blessing. In the message, you can express your birthday wishes to him, invite him to participate in family celebrations, or ask about his birthday plans and provide some suggestions.

However, you should respect the privacy and space of your daughter and boyfriend and avoid excessive interference in their lives. If your daughter and boyfriend don't want you to get too involved in their lives, then you can consider not sending messages and being respectful and polite.

In short, as a mother, you can express your concern and blessing, but you should respect the wishes and space of your daughter and boyfriend.