Am I in love or in lust?

OKAY WELL FOR STARTERS IM 18 IM IN A RELATIONSHIP WITH MY boyfriend WHO IS ALSO 18...WE HAVE BEEN FRIENDS FOR 2 years AND NOW WE HAVE BEEN TOGETHER FOR ONLY 4 MONTHS...MY QUESTION IS COULD I HAVE FALLEN INLOVE IN SUCH SHORT TIME...I've NEVER TRULY BEEN INLOVE BEFORE SO IM CONFUSED...HE IS EVERYTHING I COULD ASK FOR AND MORE...I WOULD DO ANYTHING FOR HIM...HE HAS GIVIN UP going INTO THE MARINES BECAUSE HE THINKS IT WOULD BE SELFISH FOR HIM TO LEVE AND KEEP ME WAITING...BUT I WOULD SUPPORT HIM IN ANYTHING HE DOSE EVEN IF I DONT AGREE...I FEEL SO SAFE WHEN HE HOLDS ME AND I LOVE SPENDING EVERY SECOND WITH HIM...WE ACT TO CUTE TOGETHER ITS SICK LOL...I COULD STARE INTO HIS EYES FOREVER...WE BOH HAVE SAME VAULES AND SAME OUTLOOK ON LIFE...I MEAN IKNO IM INLOVE WITH HIM NO DOUBTS ABOUT IT...I've NEVER BEEN HAPPIER...I CAN SEE A FUTURE WITH THIS boy AND I WANT THAT...HOW ON EARTH COULD I LET HIM know I WANT HIM TO know BUT I DONT WANT TO SCARE HIM AND THINK I've MOVED TO FAST...I HAVE A HUNH HE FEELS THE SAME BUT I DONT WANT TO SCARE HIM IM NOT TRYING TO TALK ABOUT MARRIAGE...IDONO I FEEL LIKE IM TO YOUNG TO FEEL THIS WAY BUT I DO!

Its ok your relation is perfect your thinking is good and you are not young to this feeling because this is the teen LOVE be with him and keep him because he really loves you .. because you was best friends .. and now lovers so thts gd ... and you think that you have fallin in love in short time .. but the truth is that you love him or like hime before but now you discovered that .. so GOD WITH YOU

I can't tell you yes or no if you are in love. Lust has more to do with looking at someone and having a sexual desire towards them. I don't think it's too early for you to say "I love you" but if I was in the situation I would wait for the guy to say it first that way you know he just doesn't say it in the heat of the situation and you know it's real.

he has told me

hes told me forever that he has had a crush on me since we were 16...

thank you for your advice!