It was Sarah!

Sarah was calling.

"I think I should go out and..."

"Wait, just... help me here before you go out."

She turned around again and pointed at her zipped as I answered my phone.

"Hello?"

"Duuude!" I got a little bit upset when I heard it was not Sarah's voice, but Katia's. I could hear heavy panting and moaning near her. "Our Sarah has a little trouble finishing this, and I thought maybe you could encourage her."

Did she say our Sarah?

"Uh, sure? What's wrong?" I said as I pulled Brenda's zipper down.

"Yo, Sarah, Liam wants to tell you something!"

She passed the phone to Sarah.

"Oh, Liam!" I heard her. She could barely speak, and she was breathing quickly. She sounded exhausted. "Liam, I love you! But... But... Oh, goodness, it's so hard! It's so, so very hard!"

I knew Katia would make Sarah work too much! But I couldn't let my girlfriend give up! I turned around to face the fitting room door, and reached for the lock, but I didn't leave quite yet.

"Come on, Sarah! You're the best! You can do it!"

"But it's... It's... Ah!! I can't...!"

"Yes, you can! Keep it going!"

"We're almost there, Sarah!" I heard Katia tell her. "Faster! Harder! Move that sexy ass! More repetitions! Strengthen those thick legs!"

Oh, she was squatting! Or doing some sitting exercise. She must've run too much before!

"Concentrate, Sarah! Focus, you can do it!" I told her excitedly. I loved the idea of my girlfriend pushing herself further to do more everytime.

"Yes! Yes! Ah! I can!!" Sarah replied with renewed energy. There was a weird, wet sound that was going faster and faster, but I couldn't put my finger on what it was. Probably she was just too sweaty. "I'm about to finish, Liam! I love you! I'm.... I'm... Aaaah!!

"Yes, Sarah!! Ooh, yeah! Like that!! That's so good!!" Katia grunted nearby.

There was a long series of pants and loud moans as they finished the squats repetitions. Wow, Katia was totally into exercise!

"Are you alright, Sarah?" I asked.

"Mmm... I'm... I feel wonderful now... Tired... Sore... But wonderful... We... We'll do a little more before we take a shower. Thank you for everything, Liam!"

"Yeah, you're cool, Liam! And Sarah, that was-"

But the call ended. Despite sounding exhausted, Sarah seemed to be having an amazing time. And so was I, with Brenda.

"Wanna grab a coffee before going home?" Brenda suggested. She was already wearing her normal clothes.

"Sure, let's... Wait, did you get changed while I was speaking?"

"Uhm... Yeah. I mean, you weren't looking, so nothing wrong happened. Right?"

For a second, I imagined a naked Brenda less than a foot away from me. But the image of a sweating Sarah exercising quickly substitute it.

"Thank you, Liam."

She hugged me. It was a warm, tender hug. She was definitely not nearly as strong as Katia, but her hands held onto my back dearly. Of course, I couldn't avoid feeling her soft, large breasts squeezed against my chest.

"Sarah is so lucky to have such a lovely boyfriend. You're generous, kind, and understanding. You're honest and loving."

"I am the lucky one" I replied. "Sarah is the best I could ever dream."

"Yes. She is fantastic. That makes you two the perfect couple. It makes me just a little tiny bit envious." She sighed and gave me a tighter squeeze.

But then she quickly pushed me away. And the instant before she did, I felt something pressing against my leg. Probably her purse or her cellphone.

"Anyway!" She giggled nervously, passing a strand of hair behind her ear. "We're cool. All cool. Let's get that coffee, yes?"

I was a bit confused, but I nodded.

"Sure."