There are these two girls that I really like but I don't know what to do.

Figure out which one you have more in common with.

Who says that they are interested in you?

You might want to interact with these girls a little more, to see if they even want to be "chosen" by you.

If they're all over you, and just simply won't leave you alone, then YOU know them, WE don't, you might want to spend more time with the one who is nicer to you.

Good luck.

Figure out what you want in a girlfriend, then figure out which one fits your wants the best. Of course that doesn't necessarily mean that the girl you pick will want to be your girlfriend.

Date them both.

First who says you have to "do anything" first a few questions

1. are you dating either or both at this time
2. if NO, what is your relationship staus with them

And why can you not merely date both till one becauses the obvous one