An ex's best friend...

Savannah
So my ex boyfriend's best friend and I started talking and we really hit things off. He asked me out on a date and I'm not sure what to do. I haven't given him an answer yet. He's truly amazing. When we first met he was seeing someone else and I was obviously with my ex and not we've both been single for 7 and 6 months. I'm not sure what to, I really like him and he really likes me. But he's my ex's best friend I'm so torn! Please help 😔