<human>: I met my girlfriend in middle school and we are now both Seniors in high school. I still really like her, and I don't consider myself "bored". We are planning on staying together through college and I don't know if it sounds crazy, but I feel that marriage is a strong possibility. 

I just sometimes feel like I am missing out of trying other girls in high school. She feels like the perfect girl for me, but do I even really know what "perfect" is? Could not having experiences with other girls be detrimental to a possible marriage? Am I thinking straight here, or is it me just being jealous of my friends around me getting all the action lately?

Should I break up with her to be adventurous and experiment? And if so, would there be a chance of getting back with her again afterwards? 

Any help would be greatly appreciated. (Perhaps experience?)

Provide a brief overview of the text.
<bot>: Thinking of ending long-term relationship in high school to experiment as I am fearing that not doing so would be a mistake.