struggling with sexuality

2 bloggs in one day! so if you have read the earlier blog, you know all about my "unwantedlove". but over the past couple of days, past couple of weeks, ive questioned if i just like boys. ive realized that i "fantasize" not only about boys, but about girls as wekk, its kinda crazy to ever think that I could ever be a lesbian. but i dont think that is what i am because i still think about boys too. i guess my million dollar question is how do you know if your bisexual, or lesbain, or straight?