People with hidden intentions & agenda usually tell on themselves due to 3 things.

Random timing, eagerness & no purpose.
You can sense it from miles away.

If a person is randomly eager to get in contact with you with no real purpose or direction behind it, it’s usually bullshit.

Sometimes your Coworkers don’t like you because they see your potential to become their Supervisor!

You’re outshining the shade they’re throwing.