I Think I'm Being Used

There's these two girls at my new job who I know we're once dating and might still be. They have both flirted heavily with me and have flirted both privately and, the difficult part, in front of one another. Like they're competing.

I am and have been attracted to both of them. They don't live together anymore.

I'm wondering if it's just a power play between them or if there's something there.