At 16 most kids don't really know who they are. Testing the waters to see if you might be bisexual is normal even into your late 20's! Life is an odd perplexity... we need to take the time to exlore all our little personal facets and folds. As you grow you will probably experiment even more. It's natural. You have an obligation to yourself to try and discover who you are, right? Just know that you are amongst the many teens who are in the process of trying to figure themselves out. It's HARD!
Whatever it is that you discover along the way is what it is. Hetero, bisexual, gay... wtvs! Don't YOU be the one judging yourself. Just accept your fabulous self. No matter what you discover in and around your life... you are FAB!