Pushing the things never works. Till he cares for you and do not trouble you, take this as a first step of building happy life. Do not ever check the phone bills or emails in front of him, that will not help, but will certainly let him away from you. There are many other means he can use, so that is of no use. You are yourself adding problems in your life. Instead forget everything as a past and start taking interest in him, talk to him a lot and provide company as much as possible, but not with tact but with love and that will certainly resolve the things in your favor.