<human>: I just wanted to get some other people's opinions. 

I've been dating my gf since high school, and we went to the same college and I graduated early and now we are in a ldr.

I am happy in my relationship, I don't think we have even fought for an entire year (not to say that we've never had any arguments, we have had many,got pretty bad), but recently I ran into some guy and his girlfriend at a bar and we got to talking and the conversation ended up on me and my gf. This woman's opinion was basically that I've missed out on many things in life by having not dated anyone else seriously ever.

This got me thinking, she is pretty much spot on. I've never had sex with, fondled, gotten a bj from, or even danced with another girl. But those are just physical things right? Why is it so good to know how that feels when doing it with someone else?

Then I started questioning if I'm actually happy in my relationship. Are we even compatible? How do I know if this is good compared to what I could have with someone else? What if I end it and it turns out that she was the best girl for me after all? 

I'm just confused, I guess I just needed to vent a little.

Can you provide a brief overview of the text?
<bot>: I have been dating my girlfriend since high school and am otherwise happy in the relationship but I feel being in that relationship so long has caused me to miss out on part of life.