Diary...confession...I dunno yet

Maybe this is a diary, maybe it's my confession.
I'm not sure, all I know is I've started doing things I can't tell anyone about.
I've been losing sleep over them, so dumping this on the internet anonymously feels like it will help.

I'd had a row with my boyfriend and decided to stay over at my best friend Laura's house last night.
The evening was getting late and Laura said she was going to bed and I said I'd finish my glass of wine and go up too.
I'd be staying in the spare room.

When Laura went upstairs I looked over at her boyfriend Mark on the other sofa.
Mark's an average guy, not amazing looking, little over weight.
He's played on his Xbox all night and had barely spoke, he was still playing it now and it had all his attention.

I was a little tipsy and maybe it was because I'd had an argument with my own boyfriend or maybe it was because Mark had been ignoring me.
I saw him as a challenge.

I got on my hands and knees and slowly crawled across the living room.
I got to Mark and raised myself up between his legs.
He asked what I was doing, I just said sssshhhhh!!

With only my right hand I opened his belt buckle and and removed it, throwing it on the floor.
I opened his trouser button and unzipped him.
Still playing his game Mark lifted up slightly, so I could pull his trousers down.
I grabbed his trousers and boxers and pulled them to the ground.

I unleashed Mark's cock, it was slightly hairy, small and flaccid.
Flaccid! I couldn't have that.

I lifted his shaft with one hand and began to lick and suck his balls.
Mark paused his game, I was starting to get his attention.
I took both his balls into my mouth and gave them a little hum, a little trick of mine that guarantees an erection.
Mark's cock stood hard.

I positioned my mouth above his firm cock and lowered my lips around the head.
I began to kiss and lick and suck the tip.
I never break eye contact when I suck cock
Mark loved this and it made him rock hard.

He placed both his hands on the back of my head and pushed my head down hard.
I knew he wanted me to deep throat him.
Now I don't have a gag reflex, I've swallowed some really thick big cocks and it's no problem for me.
I can hold my breath a long time and just keep the deep throat going.
But I wouldn't need any of this Mark is only about 5 inch hard, I could swallow him easily.

Mark held my head down tightly pressing my lips against his body, my face in his belly.
After a few minutes he let me go.
I put his hands back on the back of my head and asked him to fuck my face.

Mark gripped into my hair tightly with both hands.
He pushed my head down onto his cock and thrust up and the same time.
I took it all.
Mark then pulled me off and thrust me back down again, over and over rapidly.
Some how it got turned around, as I was very eager I was forcing my head down onto his cock and he was having to pull me off.

It wasn't long before Mark shot his load into my mouth.
I gave Mark one last long slow suck to clean his cock.
Then I opened my mouth to show him his cum, before swallowing it all.
I then went upstairs to bed.

Later I was woken to the grunting sounds of Laura and Mark fucking in the next room.
Wow she is a screamer.
It turned me on so much, I had to finger myself while they fucked.
Now I find myself on here writing this.