'Companion' in the Bible

But Samson's wife was given to his companion, whom he had used as his friend.

And her father said, I verily thought that thou hadst utterly hated her; therefore I gave her to thy companion: is not her younger sister fairer than she? take her, I pray thee, instead of her.

Then the Philistines said, Who hath done this? And they answered, Samson, the son in law of the Timnite, because he had taken his wife, and given her to his companion. And the Philistines came up, and burnt her and her father with fire.