Thanks for your post Sandi I found it really uplifting and positive to my situation. I will try to respond in 2 parts.
Firstly our relationship has been difficult since getting married, we have constant money worries and paid for the wedding pretty much all on credit which is still hanging over us. It felt like money was coming in one hand and out the other and we don't really have anything to show for it. There was also a constant struggle with childcare, both of us working full time and not really having any time for the children. I have a potential redundancy hanging over me too which could see me out of work in a few months. There has never been inappropriate communications with the opposite sex as far as I'm aware, I can say for certain on my part but I can't be 100% with my wife as I've never found out if there was.
With regards to her comments about the "old Kyle" I have changed a lot since having children. I used to be very social and would always go out with my wife to bars etc, people have said to me that I used to be the life and soul of the party and was someone that people would naturally gravitate too as I was confident, friendly and approachable, always making jokes etc. Now I have little interest in that as my idea of a good Saturday night is spent with my kids and feel guilty if I had a hang over the next day because it's unfair on them.
If I'm honest there are qualities of my old self that I would love to get back, I used to be so carefree and nothing ever fazed me but now I must admit I worry about every little thing. Even if it's things I can't control I will worry and saying this now I realise that it is not an attractive trait in somebody.