Lindsay Lohan and best pal Sam Ronson have further fueled speculation they're lovers after the DJ bought the actress a commitment ring. Sources claim Ronson bought the actress/singer a $22,000 Cartier diamond ring on Monday.

The insider says, "Sam took Lindsay shopping to celebrate her 22nd birthday... It's not an engagement ring, simply a token of her commitment."

Lohan and Ronson are long-time friends, but romance reports hit the headlines in May when the ladies were spotted kissing and cuddling at a Cannes Film Festival party in France.

-Sam Ronson Pictures
-Lindsay Lohan Pictures

(This news article provided by World Entertainment News Network)

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