Should i encourage her?.

Im a long time cuck wannabe, I've Never admitted it to my wife but have dropped some hints.
Since having kids (10 years ago) our sex life went downhill fast.
She dosent like to talk about sex so it's a tricky situation.
My wife is very intelligent, runs her own successful business, is very attractive and fit and is quite bossy and has to have things her way.
She is aware I'm quite submissive but disent know I want to be a cuck.
About 3 or 4 years ago I suspected she has cheated but never found proof. This sent my cuckold desires into overdrive. I tried talking about sex and she admitted she still wanted sex like any normal woman etc.
I told her my sex drive had really dropped off and so it was probably my fault we hardly ever had sex now. I have mentioned this a few times since and apologised and said its not fair on her. She has never really responded, blamed.me, questioned it or tried to defend me or make me feel better.
Apart from no sex life we have quite a good marriage and get on very well. I want to find a way to put the idea in her head that she deserves to be satisfied sexually and if I can't do it then she should be allowed to have sex with others. If the idea is hers she would likely go for it but if I suggest it I think it would be an instant no. She is very stubborn and would dig her heels in if I mentioned it again.
Question is how do I get her to think about it?.
Why do you suspect that she cheated? Did you ever talk to her about your suspicion? Maybe suggest that you are comfortable with the possibility that she cheated, that you even are turned on by it. Maybe just ease into that conversation instead of blurting out that you were turned on by her possible cheating.
 
Why do you suspect that she cheated? Did you ever talk to her about your suspicion? Maybe suggest that you are comfortable with the possibility that she cheated, that you even are turned on by it. Maybe just ease into that conversation instead of blurting out that you were turned on by her possible cheating.
A few years ago I began to notice she was up later than normal and on her phone. She goes to bed before me and instead of going to ...... she was up on WhatsApp and Facebook which was unusual.
One she suddenly had a drastic change of hair style and had it cur really short without even telling me.
I also found out (by accident) she had started smoking. I didn't mention it but monitored it for months. She hid that extremely well.
There were a couple of guys from her gym she spoke about a lot who I suspected it may have been. One of them she would really slag his wife off, things like how she wasn't attractive enough for a husband like him, just very minor things but sounding irritated by her, even though she didn't know the woman.(she has a ...... at the same school as ours).
There were lots of other little incidents around this time as well but I never found any proof.