OP, your other threads suggest he doesn't respect your boundaries at all. There are red flags everywhere.
He's pushing you to do things you've tried before and said you've not enjoyed. Once a boundary like that is set in a relationship, it should be honoured without debate. That is respect in a relationship.
He also has narcissistic, vindictive and cruel traits. Not necessarily a choice but he has personality disorders which make him more predisposed to that kind of behaviour.
You've now set a boundary and said you needed space but he has turned up unannounced to check you were OK. Having had narcissistic people in my life previously, they tend to worry they are losing their grip on you and come running.
Take the time you need to reflect by make sure you actually get the space you need. Tell your sister everything so she can support you and you have someone to talk to about this. In terms of this criminal case, please wait for the outcome of Claire's Law before letting yourself get drawn in to the notion he's innocent.
I hope you can also discuss this with a therapist.
If it were my child, sibling or friend telling me this, I'd always advise them that it's better to be safe than sorry. It's better to risk heartbreak and feel like one got away in years to come than risk your life or being in the exactly the same position as his accuser.