*MOST* of you are way too young to even understand what a relationship is all about. I highly recommend doing what you want to do, and being what you want to be.... *BEFORE* getting committed in a relationship. When your well on the way to being successful in your lifes endevors, then its a good thing to have that dedicated support system to help keep you on track and be your personal chearleader. Sex is great, but... life isn't based on something that occupies less than .01% of your life.
FWIW, the right partner can be a phenominal addition to your life, but...OTOH, the wrong one can just as easily destroy your life, and your ability to keep a roof over your head and food on the table...then you can end up paying for that particular privelage for the rest of your life in the form of spousal support.
Take it from somebody who has been there.