My relationship with my guy best friend

I have known my guy best friend since 2014. I formed a really big crush on him around the time I met him but I never told him because I was always in denial about it, my family has called it for years that we like each other and that we are soulmates. So around this time last year me and him confessed we liked each other and we started talking/dating for about a month and a half until we both got super busy with soccer and had to call it quits but we said we would try again in the future. Rewind to the future about a week ago me and him had a conversation where I told him that I still liked him up until about a month ago since he went after my best friend so it changed the way I looked at him. He said he didn’t know I still liked him but if he did he wouldn’t of gone after her. He did say he wasn’t ready for a relationship but my friends think I should tell him I have been in love with him for a while. I’m scared to tell him since I am scared of rejection and he leaves for college in about 2 months. I don’t know what to do and I need help.