Is this normal..?

i dont know about everybody else but me, im horny like ..all the time, i think about sex all the time and really cant get my mind off it, and if im thinking about something thats nothing to do with sex , i always seem to find a way to make it sick in my head somehow, i masterbate every single day in the shower mostly..(i like to keep clean) ..i watch pornography alot too, i have a boyfriend but we dont f**k often enough...and i often fantazize about f**king other guys even if i dont see myself liking them the way i like my bf.. Also i have recently been doing things that im my mind feel wrong but i cant help myself. Im not sure whether girl on girl counts as cheating but even if it does i dont entend to stop that ...(we're only young once) ..also a girl knows what a girl wants ;] .. i dont see myself dating other girls but i do like the action ... However the thing i do concider cheating is making out with my friend whilst being almost naked and letting him touch me, i do feel a bit like its cheating but i cant stop myself ..my boyfriend doesnt live near me so we dont get much time together ..i love him to bits and don't want to hurt him, how ever i cant stop this crazy obbsesion with f**king .. whats up with that ?