These feelings can sometimes be for someone of the same sex as you and again this is all very natural and your body’s natural curiosity towards others.
For some people these feelings stop and they go on to have relationships with the opposite sex as they get older. For others, these strong urges never go away. But as with any new feelings, they should be allowed to develop and not rushed.
It's also totally normal to have crushes on people who are older than you like teachers, sports coaches and even film, TV and pop stars. Having a crush is perfectly normal and as you get older these feelings may subside.