im not letting it go

i am divorced.  my ex is moving out on friday.  he hasnt told his family that he's been evicted.  so im worried (although i realize i shouldnt be) that hell sleep in his car.  i asked him y he didnt stay with the wmn that he cheated on me with.  im still angry and hurt.  his reasoning appears to be that hes stying with me just b/c im available. 
hes using me and i ought to stop him.  its hard.  theres a wierd ness between us.  im not sure what it is.
so if he moves out thats best for me.  and ill have to get over worrying.