I have adopted a cat about two years ago.  He is scared of me and my family but not my other cat.  He loves my other cat.  He eats his food, treats, and uses the liter box.  He loves to play lazer.  We cannot pet him.  We may be able to touch his nose.  He runs and hides when we are about sometimes.  But sometimes he will sit there.  I do not know what to do please help.