professional bullshitter

noun
a person who tells lies for a living.

"This politician is a professional bullshitter."

professional bullshitter

Someone who is so good at lying that you believe them even when you know they are probably lying.

Boy: I love you forever, I always have.

Girl: you always say that but then every time I believe you, you disappear.

Boy: I don't what got into me in the past i am so sorry. Honestly you are always on my mind. I promise I am not going anywhere this time.

Girl: you are a Professional Bullshitter how can I believe you.

Boy: because it's true this time and you feel it. I love you I do.

Girl: ya, I love you too.

A few days later Boy acts as though Girl doesn't exist.

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