Hello, I think you & this guy moved way to fast! First off, did the profile you responded to say that he's looking for an "intimate encounter"? I ask b/c he listed that on the profile once the two of you fell out! If the answer is yes....he only wanted sex! Unfortunately, he no longer wanted to have sex with you; primarily b/c he wants a petite girl or.....he just said that to piss you off b/c he knew you'd recheck the profile; follow me?
That said, there's no way he should have given you a key; nor should you have accepted a key to his home....you only dated for two months. He already met your family too, eh? Well, don't give up on your quest for love, just don't pursue him anymore.