They became best of friends.

Meaning: The boy and the girl developed a strong bond of friendship and became close companions.

Choice of Words: They refers to the boy and the girl, became means came to be, best means of the highest quality or degree, of indicates a relationship between two things, friends are people who have a bond of mutual affection.

Alternative Expressions

Related Expressions

• They became best friends.
• They became best friends forever.
• They became best friends and had fun.
• He named it Squishy and they became best friends.
• The boy and cat became best friends.
• Boy and cat became best friends.
• Farmer and elephant became best friends.
• The puppy and the girl became best friends.
• We became best friends, and I loved him very much.
• The girl and the dog became best friends.