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" Pete still smiling did n't say anything and sat next to me and rested his head on my shoulder . Afterwards he gently kissed my cheek as he said"I love you too Trick . "

What may be the reason he rested his head on her shoulder ?
Choose your answer from: [I] His head was too heave because of gravity .; [II] He was tired and passed out on her shoulder .; [III] He wanted to show his affection for her .; [IV] He was using her shoulder to scratch and bad itch .;
[III]