I try never to say 'i know how you feel' cause truly i dont, only a vague idea of what feelings might be involved...
First of all,believe it or not alot of people are afraid of the "L" word ! and it has so many definitions, but it all boils down to the feel a person has and only they can truly define it for themselves....
Second, yes you are young, so am i, and yes we want to explore, but dont look at it as just because you are young you NEED to explore and see what it is out there, you can already look and see other people arent as HAPPY , and CONTENT as you are. Dont give away a Benz for a Buggy, dont swap a 50 for a 20, and also dont NOT do it only because you dont want to hurt HER, because one day you might resent her for it, i suggest you seriously examine YOUR feelings and if you arent happy stopping at door number one, be prepared for any disappointments that may be waiting for you behind the other doors
If you stay you may Not regret it, if you leave you probably will, the choice is yours......