19 year old girl wants to do a 40 year old woman

Is anybody here a lesbian or bi? I just wanted to know because I may be bi or lesbian so I would probably like to talk to some of you about this... Now I dont know what I am yet I may be as straight as a rainbow and not even know it! I need some help in...

finding out this. I dont know if any of you can help me! Another question is I have a crush on a 40 year old woman teacher in my school I mean the age 40 is like sill really hot like a teen and kind of wise at the same time but I also look at boys and I also have my heart set on my friend randy he is hot too! So maybe I am bi? Well if I am into older woman and I think this guy is cute who is at my age what the frick do I do? Is my mind going on a date with every possible person in my mind? Aaahhh!!! I am so confused!

don'y worry yer going through teenage hormones
I am too I find myself thinking some girls are hott
but I really like this guy he's so sweet and hott!
maybe you are bi, it's not a big deal...

yeah..just wait it out
it took me like a year to really know