<human>: Could you distill the essence of the text into 1-3 sentences?

So we started dating about a year after we both graduated from highschool, and have been together since. Things were fantastic for the first couple years, but over the last year or two I feel I have slowly been losing interest in the relationship. 

A bit of background info here; before I started dating my current SO, I had a girlfriend cheat on me which was really hard to deal with. Several months later, I met my current girlfriend. She is extremely kind and comes from a religious family, which appealed to me a lot at the time in part because of what I went through with the last girl. I figured because of her faith she would be a loyal mate, and I have not been wrong in that regard.

When it comes down to it I think I'm bored. I was head over heels for this girl, and we have really worked on building a wonderful relationship, but I don't feel any passion anymore. I just don't enjoy spending time with her as much as I used to. I often find myself wishing I was doing something else or using my time more effectively to pursue my own goals. This is something I have communicated to her but things have not changed in any significant way.

I have thought long and hard about ending the relationship, and it terrifies me. I am at the point where I can't imagine my life without her, as our lives are so connected, but I don't feel any satisfaction in the relationship either. I also recently cut ties with several people I used to consider close friends and the thought of a breakup makes me feel like I would be completely alone.
<bot>: Been with my SO for 4 years. I'm not feeling it anymore, terrified of breaking up, don't know what to do!