I think the best thing to do will be to talk to your parents. Tell them about your feelings towards the guy. It is also important to listen to what your parents think about the whole situation. Weigh both options, your feelings and your parents' advice and go for the weighty and realistic side.
Love. How are you in love with a person at age 13? You don't even know what true love is. Seriously. If you "love" someone at this age... pathetic. Just wait until you're in High School. You cannot be in "love" with someone. You like them too much, but not Love much.
Love can't be restricted to an age group, but the younger you are, the more you should explore each other as people. If you think love conquers all, prove it, put him through the ringer, make sure he and your parents feel that strongly. Let you parents get to know him, study his qualities with you and others. Just don't DO anything you think will MAKE him feel the same. Love is mutual, and if he isn't willing to go to hell and back just to see you happy then move on. It will hurt, but you'll grow, you'll learn, and you'll find a damn good guy. Be open with your feelings, don't let that good one get away ;)
first of all if your not even 13 I don't really think it's your place to tell someone your in love with them or to be that madly in love. Your so young and innocent my parents won't let me date until I'm 18 and I'm fine with that, because personally I'm not ready to fall in love then get my heart broken