As she noticed Robin entering the gym, Sandra smiled a hello from behind the reception desk. Her body tingled with anticipation and between her thighs she started to get damp.
In the ladies changing room, Robin undressed in a hurry eager to get a quick workout in before an evening out with her new lover. The anticipation of what was to come meant that the gusset of her panties were sticky with pussy goo as she peeled them off to change. She threw her clothes in the top of her bag and went off to warm up on the running machine.
Sandra watched her exit the changing rooms, gave it a minute and then went in on the pretext of checking the changing rooms were clean and well supplied. Her bisexual side had been encouraged to blossom by being around fit athletic women and she got very turned on by it.
As she went in, she made sure no one else was in the room as she headed for Robin's bag. Her heart raced as she found something even better than she had hope for – a tiny black thong with a very wet patch. She hid herself in a cubicle and locked the door. Lifting the damp tong to her face she breathed in the musky scent of Robin's pussy. The wearer of these had obviously been turned on recently and that excited her. Wriggling her shorts and pants down in one go she sat down on the loo and started to rub her pussy. She held the thong over her nose and mouth and she vigorously frigged herself, occasionally dipping two fingers into her sopping pussy and then rubbing her clitoris. She breathed in the heady scent of another woman's sex and soon brought herself to a thundering climax. Sandra stifled her cries on the flimsy material in case anyone was to hear her.
Panting, she recovered from her orgasm, took out her mobile phone and sent a text. Alongside a camera phone photo of her holding up the thong, she wrote.
"You will love these! Meet me in the storeroom in 5 minutes. Make it worth your while!"
Tucking the damp thong into her pocket she left the cubicle, checked herself in the mirror – a bit flushed she thought. Sandra returned to the desk to make sure no one had missed her. The coast was clear and she could see Robin half way through her workout laid out over a gym ball. Sandra admired her trim physique and thought she could see a bit of camel toe as Robins shorts tightened over her pussy mound as she arched backwards over the ball. What she'd give to get up close and personal with her she lusted.
Remembering her rendezvous in the storeroom, she put a 'Back in 10 minutes' sign on the desk and went down the corridor holding the key to the storeroom.
As she turned the key to unlock the door, Paul came into sight.
"Anyone see you go?", she whispered.
"No, the boss will think I'm on a break", he replied.
Paul was over 6 ft and a muscular male fitness instructor. Sandra and he often gossiped about who was sexy in the gym and although Paul was engaged, the two of them had a flirty friendship they both enjoyed.
The pair of them slipped in the small storeroom and the key turned from the inside.
"Guess what I've been doing?" said Sandra, holding her fingers up to Paul's face and grinning.
