['Someone I am kind of in a relationship with wants to come over this weekend and I am not sure about it.', 'Why are you hesitant', "It's too soon after so much trauma as happened and I don't want to deal with anymore upset."]
Then just tell him no.  If it's meant to be he'll respect it
Someone I am kind of in a relationship with wants to come over this weekend and I am not sure about it. It's too soon after so much has happened and I don't want to deal with anymore upset.