I'd say simply bi-CURIOUS with a lil' thing for the ladies. And NO, I don't mean you're hung like a tic-tac, lol.
Relax kiddo. Just be comfortable with who you are and where you're at- don't overthink things- if you need to go find yourself sexually, do it; but don't wreck a good thing because you have hit that mid-20's moment when you are all "OMG THIS is what life is? Stagnant? Oppressive?" It'll pass. Don't mistake feeling bogged down with wanting a new lifestyle sexually. It's entirely possible that all ya need to cheer you up is a career change, go back to school, some sort of change of scenery.