Tease her

"Actually, you forgot about my behind. I'm sitting all day, so I would appreciate if give it a squeeze as well."

She doesn't respond. She doesn't move.

"Just kidding. That would not be appropriate, I guess"

You hear her breathing out. Then she hesitantly laughs a little.

"Why don't you start with my neck?" you try to reassure her.

Her hands touch your shoulder and then she works her way up to your neck. You can feel the tension being squeezed out of your muscles by her smooth hands.

You moan and her hands hesitate. "Keep going! This feels wonderful," you encourage her.

Your cock is swelling and it starts to feel uncomfortable. You don't want her to notice though so you cannot adjust the position.

"Am I doing something wrong? I feel you getting tense," she asks.

You use the interruption to look up and readjust the position of your cock with a swift move. As you open your eyes to the dim light, you see your friend is sweating a little.