the ex

So ladies I've met a new guy who I really like and he's told me he likes me an we getting on good texting each other and meeting up, meant to be meeting him Sunday at a car meet (we're both into our cars) I said to him that I'm looking forward to it and he just said oh his ex is gonna be with him, they were best friends before me and him got together and she's going through a rough time at the moment! 😡 what the hell do I say now?! Do I be an bitch or do I just say yeah it's fine?! Thanks girls please help