20 And Samson’s wife was given to one of his companions who had attended him at the feast.

Read Judges 14:20 Using Other Translations

But Samson's wife was given to his companion, whom he had used as his friend.
And Samson's wife was given to his companion, who had been his best man.
So his wife was given in marriage to the man who had been Samson’s best man at the wedding.