My fiance is driving me crazy, I don't know what to do anymore.

I read many things about all personality disorders and could not find one that best suits his personality. If he suffer from a mental disorder I'm willing to help him.

We have been together for 2 years, we have the most terrible fights over his lies. It's not compulsive lying, he lies to please people, he goes out with people and says he was home taking care of his ill mother... I did not know he had a problem.. After another big fight he told me he has a problem, he lies a lot to please people, its like a chameleon. . .

I think I am only seeing the tip of a big iceberg!

His personality is like this:

Highly concerned about how he looks and appears,

Acts overly friendly with strangers, example: he exchange phone number with the cashier. he want's to be best friends with everyone.

Lies very easily. Lies a lot! Too much. He says he is home but he is out with his friends, he tell his friends Im a very bad person. but when he is in front of me he treats me like a god!

Extreme need to please others, all the time! Its too much....

Seeks to be accepted and loved by everyone!

Does not know how to say no to people.

Very low self esteem

Changes his opinion when in different groups, like a chameleon.

What can it be?