going nc today

my xn still owes me money, so this morning i told him i would put an envelope under my door mat for him to make a pymt. to my surprise, he did. i thanked him for the ck via txt, gave him his balance and said i'd put an envelope out each pay day. i don't know that i'll get the rest of my money, time will tell.
i hope nc won't be too difficult. i don't miss him and don't want to see him. what bothers me is that he just goes on like nothing ever happened. he's chatting up women on his favorite FREE dating site, lying to them like he does, he's adding women left and right to his FB. i REALLY need to stop looking at his FB and seeing if he's on the dating site. why is it so difficult?