If a former ex of someone you were dating attempted to warn you about them would you listen to them?

So you're dating a person and hitting it off well when your dates ex comes to you and tries to warn you against dating them. would you listen to what they tell you?

If a former ex of someone you were dating attempted to warn you about them would you listen to them?
I would listen and stop dating the person
I would listen but proceed dating the person with caution
I wouldn't listen to them at all. probably super jealous still
It depends (say how)
Select gender and age to cast your vote:
If a former ex of someone you were dating attempted to warn you about them would you listen to them?
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