I don't mean to answer a question with a question but more info is needed for sound advise, like why did you and him break up? Was he hurt badly? If so he likely does not want to be hurt like that again and if his trust in you was broken it will take a long time to regain that trust.

On another note, you say he shows and tells you he loves you, but you did not say that you love him. Do you love him? Do you show and tell him that you love him? If the answer is no to either one or both of those questions you have your answer.

                                                                                        Dale