"Help" her.

You decided to "help" her out. You grab her nearly exposed breast and hold onto it.

She looks back at you. "What are you doing?!"

You smile. "It's popping out. I'm trying to help you out here!"

She says nothing, but doesn't remove your hand. You start to work her breast with your hand through her shirt, and notice that she started to move her hips against your cock now. You slide your hand under her shirt and bra, and pinch her small nipples, which are erect now..

You move your fingers around her nipple, and you can hear a soft moan come from her mouth. Her hip movement increase much more, and you groan in pleasure as her tight ass massages your dick.

You then slide your hand down into her yoga pants, between her legs and your fingers trace her pussy lips through her panties. You feel her start to get wet and move your fingers around in circles, sliding around her slippery clit. Her breathing has started to become labored and she's wildly bouncing on your cock.

You feel her body start to shake and tense as she cums on your hand.

The ride begins to slow down, and you lower back to the ground. No one seemed to notice what you were doing, but you can't hide your bulge at this point.

As she struggles to stand up, you quickly adjust yourself the best you can. Your inner underwear is covered in precum and provides a bit of an uncomfortable experience.

You and Alison walk out of the ride gates and she smiles up at you.

"Damn, I didn't know you had it in you!" She says to you.

"If only I could have got the same release you did. I'm sitting here feeling blue balled."

"Maybe I can fix that later." Alison says, winking.

"I can't wait for that. What's the next move then?" You ask her, eager to get yours.