I disagree, I am in love with my friend and I'm bi. I haven't told her yet but I think it would hurt you too much if you never told them. How many years have you got left of school (how long would you have to be in the same school as them)? My advice would be to tell the one you feel the most strongly about first. If he/she rejected you I wouldn't ask the other one out straight away. I'd wait quite a while. Also, don't think of the second person as the 'rebound'. I think it will be easier to tell the one who is of the opposite sex but you don't have to pick the easier option. Pick the one you like the most and ask them first. Hope that helps, I am unexperienced but this is what I'd do :)