I was talking to someone about threesomes, and they explained the difference between MFM and MMF. They said that with MFM the two men have nothing to do sexually with each other and with MMF they do, hence where the F sits in the TLA (three-letter abbreviation). Having never heard this before I then researched this statement on the net and got a lot of confirmations that this is a widely accepted terminology. I therefore have to state for the record, that I have done a few MFMs over the years but never an MMF and this story is very much a MMF story.
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Lizzie, Peter and Geoff had known each other from childhood and had grown up together in the same rural town on the rugged North East coast of England not far from Lindisfarne or Holy Island as it was known. Although not related by birth they were as close as any brothers and sister could ever be.
It was the start of the summer holidays, and with their final exams having been taken they just had to wait for their results before deciding which university they were going to attend.
None of them were big drinkers and now that they were all 18 the lure of alcohol seemed to have diminished now that it was legal. The thing that they had retained their enjoyment of was mountain biking through the shrublands that surrounded the sand dunes near Bamburgh Castle. They would load their bikes onto the bike carrier strapped to the back of Lizzie's tiny hatchback. Then the boys would toss a coin to see who got the much coveted shotgun seat next to Lizzie and who had to squeeze into the cramped back seat.
Lizzie wore loose jogging bottoms over her Lycra body suit and one of the boy's old rugby tops, though she was careful to rotate which one she wore, to not show favourites. Once at the tiny car park, they would unstrap their bikes and set off into the countryside. The boys always let Lizzie lead the way as that is what she demanded and also it allowed them to admire her ass encapsulated in her tight Lycra body suit. Lizzie didn't have large breasts, in fact, she rarely wore a bra as they were that small, "her fried eggs" as she would call them.
"Never wear panties with this suit and always shave, to avoid chaffing."
Those words had both of the men praying that one day the Lycra suit would split to reveal what they both lusted after.
The two young men didn't go in for the Lycra look. It looked great on Lizzie's neat 5'4" slender frame but on two six-foot-plus large men, they both felt it looked a little ridiculous. Instead, they wore old-fashioned rugby shorts with button fastening and rugby jersey tops. This also had the added advantage of helping conceal the semi-hard on they rode with most of the time.
One particular day it was just Peter in the car with Lizzie as Geoff had a prior engagement so had to miss their bike ride. As they sat in the car Peter remained silent as Lizzie chattered gaily about nothing. When they got to the car park, Lizzie stripped down before they set off on the bikes. Peter said nothing but happily followed Lizzie, admiring her tight ass as they rode.
"Come on slow coach, keep up," Lizzie shouted as she stood in the saddle and started to power her bike up an incline.
Peter wasn't sure if his heart would burst or his cock rip through his shorts as Lizzie's ass moved from side to side as she peddled.
When they reached the summit Peter shouted, "Stop, I need to rest for a moment."
Lizzie dismounted and wheeled her bike to in front of Peter, her face beaming with happiness.
"Are you OK?" she asked, concerned at the serious look on Peter's face.
"I am fine," Peter replied, "and in love."
"With who? Do I know her? What is her name?"
"It's you."
Peter's words stopped Lizzie cold and her mouth opened but no sound came out.
Lizzie's brain was spinning as she tried to take in the enormity of his words.
"What about Geoff?" Was all she could think of saying.
"He isn't here," Peter replied then added with a smile, "and I don't love him in the way I love you."
Peter stepped closer and kissed Lizzie on the lips. It wasn't a brotherly kiss but one full of passion and lust. Lizzie felt the heat inside and after a moment's hesitation returned the kiss with equal passion, her tongue dancing inside his mouth.
Lizzie's Lycra suit had a zip that ran from neck to crotch and in one swift movement she opened it fully before, with Peter's help, she shimmied out of it to stand naked before him. Peter was speechless as what she had said was true, she didn't wear anything under the suit and she was shaved bald. The lack of hair made her look vulnerable in an incredibly sexy sort of way.
Lizzie tore Peter's shorts down as she knelt before him, his erection striking her in the face as it sprang free. Murmuring with delight Lizzie took his cock in her mouth for the first time, like she was an experienced prostitute rather than the virgin she was.
Peter groaned with pleasure as he felt Lizzie suck on his cock like she was trying to draw his balls up through the slit at the top. He knew that if he didn't fuck her soon he would be spilling his seed down her throat instead.
Whether it was by instinct or desire Lizzie stopped sucking and still holding his cock laid on her back. "I want you," she moaned as she opened her legs in invitation.
Peter knelt between her soft milky white thighs and leaning forward supported his upper body on his powerful arms. He felt Lizzie's tiny fingers wrap around his cock and place the head at the entrance to the promised land. With a sigh of contentment, he sank his cock into Lizzie's wetness in one swift plunge. His movements were swift and urgent as he drove his cock in and out of Lizzie.
"Oh yes...fuck me," Lizzie cried, her legs locked around Peter, her heels buried into his ass urging him deeper.
As Lizzie yelled in orgasm Peter felt his balls tighten before exploding sending jets of seed deep into Lizzie.
"God that was good, thank you Lizzie."
Lizzie still had her legs wrapped around his waist keeping him inside but Peter heard a sob and when he looked at her face he could see sadness in her eyes.
"Are you OK?" Peter asked as he felt his cock slip out of Lizzie.
Lizzie said one word, "Geoff."
They dressed in silence. Lizzie could feel Peter's cum leaking out of her pussy but had no choice but to suffer the discomfort until they got back to the car. While Peter loaded the bikes onto the rack Lizzie went to the small public toilets to clean herself as best she could.
In the car on the way home, Peter went to speak, "I am sorry for Geoff but I am so glad to be your first."
Lizzie said nothing for a moment, "Let me be the one to tell him on my own. Tomorrow you won't be able to make the bike ride."
*****
The next day Lizzie pulled up at Geoff's who loaded his bike onto the rack before jumping into the front passenger seat.
"Where's Peter?"