Karen slipped into the sauna as Sammy applied more water to the hot coals.

'There's an art to this.' Sammy mused. 'But I never quite seem to get the balance right. It's either too steamy which makes it impossible to see and far too hot, or not steamy enough which means you just end up shivering and goose-bumpy!'

'I've never had a sauna before, so if you tell me it's perfect and it isn't, I wouldn't know the difference!' Karen joked as she found a wooden bench to hunker down on.

Sammy smiled and placed herself next to her friend. They were both nude except for their towels. Karen's large bath sheet easily wrapped around her body twice over, Sammy's was skimpier. It barely covered her boobs and stopped short just below her most private of parts.

'I am pretty hot already.' Karen observed as she adjusted her sheet.

'Why don't you take it off? It's how they do it in Finland after all. Completely in the nude. You know what, I think I might.'

'Sammy!' Karen gasped. 'What if someone walks in?'

'Unlikely. The saunas are only ever busy during the peak weekend hours. I doubt we'll be disturbed.' With that Sammy removed her towel with a flourish and laid it on the bench as padding for her naked backside.

Feeling uneasy, Karen made a point of staring straight ahead so as to avoid seeing her friend au natural.

The temptation would prove too much and Karen found her eyes wandering downwards towards Sammy's body. She was as toned as Karen expected. Her breasts were perky and small, similar to Karen's before the weight gain. Sammy's washboard abs were perfectly defined and they led down, all the way down to her pelvis. Sammy's legs were closed but Karen could just make out a little tuft of bush poking out. She found herself jealous of Sammy's perfectly long legs most of all.

'It's so freeing.' Sammy murmured as she arched her back and closed her eyes. 'I always wanted to take a trip to a nudist beach on a sunny summer's day, but I was too scared!'

'You? Scared? Of what?' Karen queried, incredulous.

'You know, of not measuring up to the other sunbathers.'

Hearing her friend talk of her own insecurities made Karen feel an odd mixture of relief and sadness. Relief at hearing she was not alone in her body-conscious issues, but also sadness that the perfect specimen of a woman in front of her could be so insecure.

'I'm sure your boyfriend thinks you're perfect. Wait, you do have a boyfriend, don't you? I just realised I never asked!'

'No, there's no-one at the moment.' Sammy said quietly.

Karen mentally kicked herself - how could she be so wrapped up in her efforts to lose weight for her husband and never bother to find out that side of Sammy's private life? What kind of friend was she?

There was a sudden tension in the air. Karen knew what she had to do to dispel it. With a flourish she whipped her towel off and sat back down on it. She folded her arms across her tummy, a conscious effort to hide her 'spare tyre'.

'What the hell, when in Finland, eh?' She winked.

'You are just full of surprises!' Sammy hooted and brought her fist up for a mutual fist-bump. Karen happily knocked her knuckles against her friend's.

 

They sat in comfortable silence for a few minutes before Karen found her eyes drawn to Sammy's hot body once more. She felt odd inside. Perhaps it was the lack of sex but she was sure she was starting to get aroused. She tried to push the thought from her mind but it was impossible to escape. Her nipples hardened and her pussy lips started to become engorged.

'If only Quinn was here and could see us now.' Karen mused, trying to turn her thoughts back to the husband she adored. The plan backfired. Thinking of the man who pleased her, especially sexually, aroused her even further.

'I've never met him obviously, but if he's a typical man he'd be imagining all sorts.' Sammy ventured.

Karen chuckled - her friend wasn't wrong. She turned to her and realised Sammy was studying her body intently. Her breasts and erect nipples in particular. Karen made a decision that would affect the path of their friendship irrevocably. She parted her legs, just to see what Sammy would do. As she expected, Sammy's eyes darted downwards. The personal trainer pressed her tongue against her lips.

Suddenly embarrassed by both her nakedness and her wanton teasing of her friend, Karen closed her legs and reached for her towel to hide her modesty. Sammy reached over to her friend and touched her cheeky tenderly. Karen allowed herself to be drawn towards Sammy's face. Sammy leaned forward and, closing her eyes, kissed her softly on the lips. Karen could not even pretend to be shocked, she'd had brought this on herself. She did the only thing she could think of. She kissed her back.