<human>: I've never really been in a long-term relationship so I'm a complete noob at what to expect and how to go about doing things. So, there's a girl (whom I used to like a lot, and still do), and we've been hanging out and talking for the past few months. Now, we're trying to figure out if we should go any further and make it official.

She's never been in a LTR either, and so neither of us know what to expect. I will say, that over the course of the last few months, I don't really feel like I have as much of a "crush" on her. We haven't slept together or done anything sexual, so I don't know how much that plays a role. 

The things that keep me from wanting to take things further are (1) this lack of feeling like a have a crush on her, which I think I might have with other girls and (2) I often think about what it would be like to date XX (where XX is some girl that I sort of know and who I think might be physically more attractive). Basically I think a lot about what it would be like to "trade up."

I feel like the response at this point for most people would be to break it off; however, I've been diagnosed with OCD tendencies, and I think I might just be wondering if the grass is greener no matter who I end up with. I think there's an aspect to my persona that always wants what it can't have (not that this is unique to me). There have been plenty of times in the past where I thought I didn't like a girl too much at the time, and now regret not sticking with the relationship. I feel like there's a lot to learn from being in one, and I'll never learn if I keep this complex I have. 

Any help is much appreciated!

Give me a shortened version of the text
<bot>: Not sure if should go further with a girl, potential R-OCD about thinking the grass might be greener elsewhere