Does she really want the relationship?

My fiancee and I have been in this cycle for most of our relationship where things go good, then I mentally check out for some reason and focus on other things and hobbies.
When I do this, over time, she will go and do something to get my attention like chat online with ex boyfriends or start online relationships, and when i find out, I get upset and afraid and try to give her everything she wants, and make her feel comfortable again..
I do love her, and over time my feelings have changed about how I feel.. she is the mother of my 2 children and we have gone through so much together.
The thought of being without her and my kids destroy me..
Most recently, things have turned for the worse and she wanted me to move out so she could have time without me, to find out if she would miss me.. of course i did not want to do that, and have just been trying to do what i can to comfort her, and re-kindle the relationship.
We have not "made love" for at least a month. She still says she loves me, and we kiss and hug. We have been doing lots of talking and just yesterday we were in bed. She had a fever and was sick, and i was taking care of her..
We were talking about various things and she wanted to lay with me in bed.. she said for me not to get any ideas, that she just wanted to be close and lay together.
She made a hot bath before I went to work yesterday, and while I was in there, i asked her if she still wanted me to leave... she said no, that things have been good, and this is what she has always wanted.
What she is afraid of is, things get good again, and she opens up her feelings to me, i will check out again... she is tired of the hurt, and what she has been doing with me the last month or so, and her actions, i believe is what she percieves of how i was to her..
I know there is no such thing as a perfect relationship.
All relationships take work,
There is so much more background history to talk of but dont want to bore anyone yet...
When it comes down to it.. i love my family.. i want a normal life.. i love her.. i just feel like i have been dragged through the coals.. but want to do whatever i can to show her she is the one.

Can anyone chime in? Thanks so much in advance...

Source: http://talkaboutmarriage.com/general-relationship-discussion/56920-does-she-really-want-relationship.html

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