Please help!!!!!! Am I in the wrong?

I'm talking to this guy. And I found out that he texted me the same thing that he texted to 9 other girls. So I got the numbers for the other girls in the message details. I left the guys know that I was talking to him and that I thought they should know that he's talking to other guys besides them. I feel like he's tryin to be a playa, and that just isn't right exspecailly when he tells me that he loves me.