Don't text a message like that, you sit them down the next time you see them, and you start it off by saying "Maybe you should sit down, we need to talk about something...."
takes less than a minute and it has a lasting impact, because you did it in person, you initiated the conversation, you were genuine & honest enough to do something about the situation and you asked for space.
Doing it by email or txt would never accomplish the same thing. Emails & txt can't convey body language & sincerity expressed in your voice tone.
