Are they doing what I think they're doing

Are they doing what I think they're doing?

"Robin, you're hurting me," Starfire cried, she was trying to learn how to arm wrestle while Robin was teaching her. Robin grunted,

"Star it's supposed to hurt, it's called using your strength…" Starfire turned up a notch and was now pushing down on his hand making it nearer to the table.

"Oh no you don't…urgh!" he pushed making his hand now pushing against hers. Now Cyborg and Beastboy were just walking by when they heard strange noises coming from Robin's Room. Their eyes started to widen as they could hear rapid breathing, very heavy in fact.

"You're not going to win this one Star," Robin grunted breathlessly.

"We'll just have to see won't we?" And with that she yelled out to get more action, Cyborg was now smirking while Beastboy was grinning; both were now leaning against Robin's door to see if they could hear more clearly.

"I can do better--" Robin growled as he pushed harder. Starfire groaned a little as she struggled. Beastboy let out a snigger, as did Cyborg. Raven was walking by when she realized it was too quiet. She came to a halt as when she spotted Beastboy and Cyborg pressing their ears against Robin's door.

"What in the name of Azar are you doing?" she asked a little disgusted by the way they were listening in. Both Cyborg and Beastboy hushed her and gestured for her to come over.

"It better be worth it…" Raven whispered, as she pressed her ear to Robin's door also. Her eyes widened as she grinned.

"Robin…I can't…" Starfire whined.

"You can… keep trying…come on I know you can do it…" Robin urged.

"I can't… it's… too much" she moaned.

"I'm not letting you back out now…you're almost there…keep on going…ugh! Oh my god…" he growled.

"Yes…yes…yes…" Starfire cried out. Then all of a sudden,

"YES!!"

Robin groaned,

"Wanna go again…?" he offered.

"Yes please!" Starfire cried in glee.

Raven, Beastboy and Cyborg couldn't believe their ears. As all three of them backed away from the door, gob-smacked, they walked back to the main room.

"Was it just me or am I hearing things?" Raven asked but before anyone could reply. Robin and Starfire entered the room.

"I give up Star you're too good…I got beaten by a girl!" Robin moaned. Starfire giggled,

"There's always next time Robin…" Robin nodded his head in agreement. They suddenly realized that everyone else was staring at them.

"What? We only had an arm-wrestle!" Robin said loudly. Beastboy and Cyborg burst out laughing. Robin and Starfire were perplexed.

"What?" they both said in unison. Beastboy was the only who could speak…slightly.

"We…ha…ha…we thought you were doing…HAHAHAHA!!" Robin's eyes widened then he started laughing. Starfire didn't have a clue.

"Robin I don't understand…" Robin stopped laughing but didn't stop grinning and he whispered in her ear. She went red all over, her cheeks were red, her ears were red and her nose was red. Then Robin realised something.

"HEY!!"