Luffy saved you from getting abducted by the marines.

The reason why you were wanted by the marines is because you knew where the One Piece is. You were a valuable key to this very treasure.

You panicked when you were now in the Thousand sunny with the straw hats, expecting them to threaten you for it. When they found out, they were amazed. But unlike the marines they didn't take advantage of you.

"Don't worry I won't use you for that. Let's be friends!" Luffy exclaimed.