Enough is enough
My wife and I have been married for 20 years. She is now 51 and I'm 45. About 3 months ago my wife gave me quite a shock. She didn't even ask. She told me what she wanted and she got it.
I have been working 3rd shift for the past 10 years. I work between 10 and 12 hour shifts and five days a week. My wife and I have sex usually once a week. It's mainly because of work. Between work and sleep it doesn't leave much for free time. Once or twice a month she will wake me up with a blowjob. She does it not expecting reciprocation. I also eat her pussy probably once a week at least. She knows I love doing it and she cums pretty hard when I do it.
So one day a few months ago she texted me while I was at work. It said, "I'm horny." I didn't see it right away because I was working. When I saw it I said, "It's gonna be a few hours before I get home babe." She said, "I need dick. Like now. A big hard cock inside me. I want to cum hard." I said, "Well, I'm up for it when I get home. I dunno about the big part tho. Will my 5 inches be enough :)" She said, "I'd rather have 10 inches in me." I said, "I can fuck you twice." She said, "Or I can fuck Alexi once." I said, "Who is Alexi?" She said, "Guy from work. He wants me. Bad." I said, "How do you know this?" She said, "He told me. I was flirting with him and he said all he'd have to do is fuck me once and I'd be hooked." I said, "And?" She said, "He's on his way over." I said, "You're gonna have sex with another man?" She said, "Yep. I want to be thoroughly fucked by a guy with a big dick."