Could I still accept it and let it go but at the same time not hang round with him? I said to my friends I can’t really hang round with him anymore as he’s been  so rude/awkward in my point of view.  Or perhaps i should try to ignore that

Oh, absolutely!  Accepting it and letting it go is just for yourself, your own feelings. You’re just not letting it bother you anymore. If you don’t like the new dynamic with him and don’t feel like you want to be around him, that’s totally okay. I’d just go with the flow at this point.  That friend that I mentioned earlier that became awkward with me… he was still invited to all of the parties I was and we both always went, we just didn’t really talk to each other and focused on our other friends that were there, and that was okay. Eventually we started talking again, even just little conversations here and there, and that’s okay too. The same may eventually happen with your friend and it’ll feel less awkward to you.  Until then, you can do whatever it is you feel comfortable with. Accepting it and letting it go will just give you some peace about the current situation.