How do i tell a guy .... please help?

how do i tell a guy that im in love with him and i have been sence 6th grade. and that i dont want to do anything extreamly sexual i just want to hang out with and i just for once want him to be mine . we have gone out before but that was in sixth grade and he was my longest realation ship and i look at it like hes my one and only . like i cant find another one of him out there . hes been on my mind for 4 years now and ever girlfriend that he has gone out with kills me . im the kinda person that doesnt believe in love. and doesnt fall into love at this age . but is it possiable i could be in love . I MEAN this boy is everthing to me .! i want to be around him 24/7 hes hot nice funny . and we have are up lifting sexual moment but im afraid that he just looks at me as a friend after verything we have been through . and just wants stuff from me . but im hoping if i tell him i really like him . will he change .. will he love me back .i dont know but how do i tell him and not loose him . caue this boy is everything to me.