How often do you jerk off thinking about your wife getting fucked by a big cock

My wife cheated on me and I found out by seeing the messages on her phone. I photographed all the messages for evidence before confronting her. Some of the best walks I've ever had are reading over those messages seeing how slutty she was being for another guy. I cum so quick over them
care to share the texts?
 
Oh… like 8 times out of 10 I jerk off to the thought of my partner with various persons. I’m not that into the whole “big cock fantasy”, but I fantasize a lot about my partner with a particular cock that she told me is “just perfection” inside of her.
 
She never allowed us to take pictures or video. She said we would post it on the internet without her knowing… she is not wrong.
We don't take pics or video. We, me, her...do not want this on the internet. You never know who might see it.
I've has many friends show me pics of their latest "conquest", naked pics of girls they've hook up with. Other guys showing naked pics of their wives. Hell yes I like to see the pics but there's no way I'm showing my wife like that.
 
Every single day multiple times a day. Especially now since she’s getting into my fantasy more and more.
When you say getting into your fantasy, what does that entail. My wife will now tease me after we’ve read erotic stories in bed and tell me how one day she’ll let another guy fuck her and I can get sloppy seconds. Many years ago when we first got married, I would never have suggested that she fuck another guy. Then something changed and I broached the subject when ....... She was ‘absolutely not’ but over time, it’s now about, “yes, one day she’ll let another guy fuck her’. Cannot wait for that day to arrive.
 
Short answer....a lot.
About 4 years ago we got into mfm fun with a guy we know, we've done it many times with him. We're all comfy together now and it's a fun, sexy, relaxing night for all of us. This has opened our thoughts about sex fun like you can't belive. Wife and I have sex way more often than we used to. She's super horny for days after he's been with us.
Yes I beat off thinking about our fun often. But I also fuck my wife often.
I’ve masturbated jerked off/wanked when I’ve not been with her although she doesn’t fuck without me enjoying the sensuality of me presenting her to other men to fuck her while telling me that she loves me and thanking me for what I’ve arranged for our pleasure. She’s against me masturbating while she’s being fucked saying that it’s a waste of energy and cum which would be better spent on her but she’ll enjoy a circle jerk as its centre of attraction helping us out with her mouth and fingers until every man has had his due and has cum on her body with me being last to cum as the etiquette demands of a host.
She questions why men masturbate in the presence of women who can relieve them of their load and concludes that it’s a power thing in the battle of the sexes which women will always win as there’s no real competition between a calloused male hand and the velvet softness of a woman unless the man wears an automatic watch and needs to keep it fully wound.