Are you back with this same guy? He already showed you where you stand and what’s your place in his life: on the very bottom of his priorities. Why are you surprised? Why would things change?

I’d not blame his friend for what’s going on. Your guy clearly prefers company of his friends to your company. It’s not his friends’ fault. If your guy valued you, he’d not cancel plans with you or he’d take you with him regardless of what his friend wants.

In addition after he showed you that he doesn’t care about your company and cancels on you, you still going to his house and even sleeping there. Why? He disrespects you repeatedly.

On unrelated topic: why do these people party during pandemics???