Married Neighbour

She's forty four, married to a guy who works as a council official, and she's always up for sex.

I wouldn't say Kate is the prettiest woman out there, but she's in good shape and has large tits to go with her very large clit.

Since April this year I've been fucking her pretty much every day. Some days I'm in her home for a couple of hours. Other days I'll call in and fuck her for ten minutes or so.
Her husband Mark knows I'm fucking his wife, because it was him who invited me round to screw her one evening.
He basically told me she'd been drinking and had been talking about me fucking her.
He was more than ok with me fucking Kate, in fact he watched us having sex throughout the first time, wanking in his chair as I fucked his wife on the sofa.

Kate absolutely loves sex, and believe me is prepared to do almost anything.
I know I'm not their first extra marital lover, and I also know she's having sex with a woman she works with. But I get to suck on her large tits and massive clit more than her husband or her colleague these days.

The other day we'd been fucking in their bed. I'd cum twice filling her pussy and arsehole. I'd not long pumped my load up her arse when Mark got home from work.
It's the first time I'd seen it, or heard how Kate spoke to him. But she ordered her husband to lay on the bed naked as she sat on his face.
Kate made him lick and tongue out my cum from her pussy and arse, which made me horny again.
I was rock hard and ready to fuck her, but Kate asked me if I'd fuck Mark instead.
I didn't, as eventually Kate gave me a wonderful tit wank, but I was tempted to fuck her husband just experienced fucking a guy.

They've asked me if I'll have a 'Full on threesome' where I fuck them both. I've told them that I'm not sure, but the more I think about fucking Mark, the more appealing it is.
Especially if I get to lick and suck on kates big tits and clit.