My wife is so boring in bed these days, it's down to a routine. She sucks for awhile, demands I finger her, we get one of two possible positions, then it's done. No facials allowed, no cum swallowing, no eating out her pussy. No flirting, no sexy outfits, no porn in the background (it grosses her out), no multiple sessions in one day, no effort. She even schedules it with me! She won't even touch herself or masturbate on her own (which could be a good thing, I guess). We used to try it in weird places, new positions, pictures and videos, all kinds of stuff, we've just gone into a complete rut in the last two years. She's so vanilla now, I didn't think it was even possible with today's women.

Now, don't get me wrong, I'm glad I can make her cum every time with my fingers alone 99% of the time (huge accomplishment), but I feel like that's all she wants me for when she wants me. I want to cheat and have ample opportunity with a girl who's been sending me explicit pics and texts of what she'd like to do to me. This is where I want to be - this girl wants me to fuck her up the ass for the very first time, cum all over her face/mouth, spend hours licking her hairless pussy, the whole nine yards. She wants me to fuck her in my wife's bed, so exciting. She actually wants me instead of just the mechanical part of me, if that makes any sense.

I'd be crushed if my wife did this to me, so I haven't done anything yet, but it's getting tougher and tougher to resist and some boundaries have been compromised. Any ideas on what I should do?