WOAH !!! SOMEONE CALL 911 !!!

heres my take. not only are you NOT A GOOD LISTENER but you cant take visual clues either. Your wife is horney. She told you so. She's flirting with you. She wants you. If she didnt she wouldnt be showing you her bikini line.

here's some 180's for you.

1) Listen Closely.
2) you admited, "I'm selfish both in bed..." OK. then this is got to be about HER then. you take care of her. listen read whatever: you take care of her. as long as it takes. she shaved for you. make it worth her while to go through all that for you. you wait your turn until she says, WOW you must be listening to Steve McQueen.
3) then afterwards you talk to her and listen to everything she says and see if she wants a twofer.

secondly, you are sending her mixed signals. examples, you send her flowers, she's all happy, you ignore her; the MC conversation, period; you complain about your sex life a couple days later she comes to lay with you in bed then nothing; you agree "to work on it for real one last time" then she parade around in her underwear and you are thinking about buying a guitar.
Dude, I play guitar and I will tell you there are alot better things to do with your fingers.

You have to go one way or the other. You Sway. and btw, that is a great song to play on the guitar.

"Love is the way the say is really strutting out"

I think you have the two year old humdrums. your both working your a$$e$ off, arguing about crap, and should be having another kid. So, Listen to her! she is willing to work on this. learn to read her vibes. HER NEEDS. her complaints seem petty and easily reversed by you. neither of you are moving out so you got to start listening to her and stop arguing.

and third, you got no proof of an affair. I would treat it as you got DB'ed Real Good. Nothing works better at at getting your spouse to turn around then giving them the impression that you are moving on. Facebook. HA! Texting HA! HA! You may be getting bluffed.

So Turn Around. There are alot of 180's you can do with your behavior and interactions with her. do them with Confidence!

p.s. in case i dont read about you again till after halloween, no instigating anything with your wife. enjoy the holiday without bringing up any of you marital concerns. if she does you better listen and validate and work on what she's saying.