What's going on

I suffered from insomia last night,thinking about some questions which puzzled me these days.
Do I love her?What have I got in this relationship?Does she really care for me?Why am i feeling unhappy nearly everyday?
I know what exactly I want.She isn't the Ms Right for me.We seldom communicate with each other deeply.In the vacation,the life style she likes is connecting in internet,charting with her friends and playing computer games,which,I think is wasting of the time.I told to her what I thought a few times but useless. She considers that her life will be boring without this.I am a sensitive man so I need the security of a stable relation.She cost most of the time on internet,due to this,I can hardly feel her emotion sometimes,which,really depresses me.
I have considered breaking a few times.But it's hard to decide.I'm not a man with plent of guts.A friend of mine told me that the boldness was not only the choice which I would choose,but also the persistence after I did my choice.
What's going on?I have to think about it.