She's nervous.

Bumblebee is standing there nervously, stark naked.
The sound you heard earlier was the towel hitting the floor, it seems.
She just looks at you two.

"Oh friend Bumblebee, are we pigging the Shower," Starfire asks.
"It's 'hogging' the Shower, silly," you reply, still fucking her.
Starfire laughs.

"...uh, I'm just going to go," Bumblebee finally says.

She walks to the door, but you see a dark light go around the nob.
She tries to turn it.
No such luck, as Raven is holding it shut.

"I think Raven wants you to stay," you say calmly, still fucking Starfire.
"Could you...could you at least stop doing that for a second?"

Starfire pouts as you pull out of her pussy.
Your dick is now exposed to the open air as you feel 2 sets of eyes on it.

"Oh...oh my," Bumblebee says.
"He has the most wonderful of cocks, no," Starfire says, "Would you like a turn?"
"...um...well...I..."

You signal Starfire to join you as you approach Bumblebee, standing naked before you.

"Do you...um...mind?"
"Oh, you have the most wonderful of tits," Starfire says, "May I...may I touch them?"
"Can I just...um go...please?"
"But we are teammates, are we not? We share everything. Plus...I've never touched any that color before."

Starfire touches Bumblebee's right breast with her right hand, while her left is touching her arm.
The Heroine gasps...but she's not angry or anything.

"They are most lovely...and soft. Do you like this? Raven enjoys my breast rubbing."
"It's...I mean...you can keep going...I guess."
"I need to feel them too then."

You reach over and touch her other breast, making sure to rub her nipple in the process.
She gasps again...still not angry.
She's...very aroused.

"Raven just wants us all to have fun. Just enjoy this," you suggest.