Cheating Fantasy

We all see other guys and girls we would like to fuck, even if we are in a very committed LTR. I'm no exception and I don't know what my OH would think if he could see inside my head when I masturbate, as I often think of men I have fucked before and sometimes of men I wouldn't mind fucking. I know he does too and I bet you do too. It's normal! So the other night I was out with friends and chatted to quite a hot guy. Not weak at the knees hot, just something assured and sexy about him and for some reason I ended up thinking about him today when I was home alone. I just got that feeling he would be a really good fuck and it is hard not to fantasise about doing someone different sometimes. So I said out loud (as I've said before talking is to myself when masturbating is thing these days) 'I bet Sean would be a really good fuck." Then I lay on the bed and imagined scene by scene how it could happen. I thought of him calling round to borrow a book we'd discussed while my OH was out. Us sharing a glass of wine. While I was thinking this, I was lightly caressing my nipples inside my bra. I thought of him chatting about being single and about the pros and cons and me blurting out that the lack of sex must be difficult. Now I am squeezing my nipples and saying aloud 'When did you last fuck someone, Sean?' And now I picture him suddenly all over me, snogging me, running his hands over my tits as I am now. I unclasp my bra and tug down my leggings and knickers, imagining Sean doing the same. I am actually panting as I do this. I imagine feeling his stubble as his lips trail down over my neck and find my tits, my nipples hard and erect as he kisses and sucks them. I try to picture what his body would be like as I tug his shirt over his head. He has nice muscley arms and a broad, sexy chest. I imagine the smell of it and the taste of him as my hand finds my hard clit. And I say 'Ohhh, Sean', pretending his fingers are on my pussy, his lips on my nipples as I pinch and squeeze them. Inspired by this, I take out my rabbit vibrator and switch it on, holding it between my thighs without letting it make contact with my cunt. I start to stroke it like it was his cock. 'Mmmm you're really big', then I move it up and start to suck on it, imagining sucking Sean's cock, a new cock for the first time in years. He is really hot, I think, what would it be like, if I could just once with no repercussions have sex with him right here? 'Lick my cunt, Sean' I say and I put the ears of the rabbit to my clit, imagining him licking and tasting me. That brings me really close, but I want to fuck the guy. I say out loud 'I'd love to fuck Sean. I'd love to feel his hard cock in my cunt' and then I slide the vibrator up inside me. My cunt is soaking wet. I start to fuck the vibrator while rubbing my clit and squeezing my nipples, pretending I really am fucking the guy. And random memories of other dirty illicit fucks come back as I shag Sean hard in my mind, I imagine him being aroused by me, shouting out what a great fuck I am, what a dirty bitch I am, and I can feel myself starting to cum. 'Ohhh fuck, cum inside my cunt!" I almost shout, "I'm going to cum all over your cock!" And then I am cumming, exploding, rubbing my clit fast and hard while the vibrator pulses inside my pussy, like a real cock, like his cock. And after I cum, I think is this unfaithful, to so vividly imagine fucking someone else Does my OH really do it too Surely we all do? Who knows, maybe some night we can do it together?