I've known 2 liars just like this
One was a lass (at the time she was 17)
She claimed (3 times) to have been pregnant (with twin girls) and 3 times they where stillborn (with pictures of dead babies lifted from google)
She finally fell pregnant (with a boy) and she avoids me like the plague
She's pregnant again so hopefully she'll have the girl she craves so badly
The other was an exs brother
No matter what it was,he'd lie about it
From the time he went to bed to my parents sat behind him in a cafe while listening to him tell some poor lass that he was in the sas and couldn't tell her anything as 'it's state secrets'
He couldn't lie straight in bed-he lied about everything (and I mean everything) and when people called him out on it,he'd either deny it or double down on his lies
Throw this one back-hes not worth it