Best Friend is dating my Crush

In my group of friends there is 2 boys and 4 girls(myself included). I've known them since the 5th grade and we are in our senior year now. I have had a crush on Boy #1 since my sophomore year. Something in me just started to like him. I have not said anything because I was scared he would reject me and ruin the group. However my best friend, girl #2, has been talking to him a lot lately hanging out with him. Last night she messaged me and said they like eachother. Any advice on how to handle this? She knows I've liked him for 2 years and she apologized a million times but I don't know how to react. Any advice? And i know I had no claim on him however i more hurt that my best friend would do this to me. I'm more mad at the lack of trust and betrayal.