My best friend boyfriend won’t stop inboxing me 😫

Quel

So my bestfriend “boyfriend” randomly send me msg out of the blue all the time. Like he speaks to me everyday which is okay and cool... but i honestly don’t feel like you need to speak to me everyday. It’s kinda add To me. Like I might be on fb and he will msg me like a 6 am “what you doing up so early” or “get off fb” “go to bed” and it might be at late in the night like 12am or so. Should I be worried because I feel like he slick hitting on me. me being on fb at weird hours of the night is non of his business he should be concern with his family. Should I bring this to her attention or what?? What would you ladies do?? Like it’s getting annoying af. Block him or what??