I think I like girls a lot.
What is it about girls that you like?
I really like their beauty, I often find myself attracted to girls.
It's okay to take your time and figure out which sex you like.  You can be attracted to anyone you desire, and if the feeling is mutual, you can form a relationship.
At the end of the day I just want to watch lesbian porn.
Well however you want to fulfill those desires is up to you, just don't become addicted to watching porn all the time. It would be healthier if you got a girlfriend if you want to truly satisfy your affection towards girls.