Would you warn your friends/family NOT to date a red flag friend?

Would you warn your friends/family NOT to date a red flag friend?

If you have a friend that's a good friend, but an awful boy/girlfriend, and they or your other family or friend had their eyes set on the other, would you warn them not to date them, of their many red flags, or their terrible history, of that time they got someone pregnant and left them, or that time they gave someone an STI (assuming that's not something your family/friend wanted in a relationship).

Would you warn your friends/family NOT to date a red flag friend?
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