Is it possible that curiousity could turn into being a biual?

So ive been straight all my life but like.. I always thought a woman and another woman is such a beautiful thing and i was soo curious to just kiss a girl. I find myself "checking out" girls i supose, maybe its because i just think their pretty or idk...Ive never kissed a girl and havnt kissed many boys but, well my question is how did you find out you were a ? Did it start off as curious, or was it just always there?