I love my bestfriend? but im scared to death to tell him.

Ok. Well over the summer of 0’8 jordan started to try and talk to my friend jasmine.. but that never worked out. and shes long out the picture, but me and jordan are BESTFRIENDS, and have been for a while.. I introducted him to my bestfriend, in the intire world, kayla.. they dated for 6 months, and have been broken up for 2 months, shes 16, hes 12. and I am 13.and they hate each other, but they are each others first love. this past weekend I was over at my friends house, and jordan was stayed the night, we made out,and fell asleep with each other, and we both told each other that we liked each other, and stuff but we promised not to tell anyone what had happend that weekend. but see he has a girlfriend.? and now im stuck I have always had feelings for him, ALWAYS. and now it hurts to know that I got so close to him, and I dont know what to do now.. im scared to tell him anymore of my feelings, in fear of losing him, cause I realized I love him. but then again, im so terrified of losing my bestfriend kayla, the only one I tell EVERYTHING to, in fear that she’ll hate me, and wont understand, I feel guilty now, but now all my feelings are coming out.. someone please HELP