Confused on the diolouge of the Fetts

Okay, so basically, Obi-Wan and Jango Fett talks to each other. Obi-Wan asks him some questions and Fett says:

Jango Fett: I'm a simple man trying to make my way in the universe.

Obi-Wan: Have you ever been close as Courscant?

Jango Fett: Once or twice.

Obi-Wan: Recently?

Jango Fett: Possibly.

Then they talk of the clone army and then Obi-Wan leaves. Boba asks his dad what's wrong and Jango Fett then says: "Pack your things, we're leaving!"

My question is: Why? Jango did not reveal anything that would betray himself other than he was hired by a guy from a moon.

Do you all think he knows that Jedis can sense things?

What are your thoughts on this?

 

His armour was in plain sight. Both Obi Wan and Jango knew what the other had done.

 

Obi wan knew that it was jango..but he was waiting for jango to admitt it...

 

Jango notices Kenobi investigating the assasination attempts on Padme on Coruscant, and then finds that same guy questioning him in his apartment on a supposedly hidden world a short time later. Coincidence? I don't think so. He knew the Jedi were on to him, and that they should get out while the gettin's good.

 

I also think Jango's survival instincts were kicking in at that point. He wanted to get himself and Boba away from Kamino and possible danger.