Yes

"You don't need to worry, plenty of girls just go around in sports bras during the summer heat!" Nate reassured her cheerily. "I bet you'd look fantastic in one! Go for it!"

"Oh... um... okay..." Samantha replied uncertainly. She still wasn't sure about this, but something inside her said that this would be a good idea...

Samantha stripped off her sweaty top and tossed it to Nate. He caught it with ease. His jaw dropped at Samantha's breasts; they were enormous. Her tits were nearly overflowing from the cups of her bra!

"Woah..." Nate remarked in spite of himself "I mean, uh, I'm happy for you?"

Samantha blushed at hearing those words come out of his mouth, but then she remembered something Nate had said earlier and smirked to herself. Nate liked her breasts! And he was complimenting them too!

She pulled on her bra and adjusted the straps on her shoulders. The moment her shirt came off, however, she felt an intense warmth and tightness in her breasts. However, her back and stomach felt nice and cool, the wind blowing through them making them feel lighter and less restricted than usual.

Her nipples were hard and erect from all the exercise and she could feel them poking against her bra. She didn't know why she hadn't been doing this before now; it felt so liberating!

"Thanks, Nate..." Samantha muttered bashfully "...and thanks for running with me."

Nate smiled at Samantha "No problem Sam! You looked really uncomfortable running in that shirt."

Samantha nodded shyly at that. They were almost at the first checkpoint, where the shirt drop-off point was located. Coach O'Shea was stationed there, ready to greet the two runners and monitor their progress, or lack thereof as the case may be.

"Alright ladies, get your shirts in the box and head to the checkpoint for a quick drink," Coach O'Shea ordered them. She had been watching the two of them closely since they had started their laps, noting that Samantha had fallen behind and Nate was keeping her company.