Do you think that I should confront him?

My boyfriend broke up with me and kicked me out this past April and I have been heartsick ever since. We were together nearly two years, living together nearly 1 1/2 years. Ever since then, he has been spreading lies about me, bad mouthing me, and just over all trashing me and my name. This guy is 56 years old and acts like he is 10! The thing is he is telling these lies to some people we both know. One person asks me about it and believes me over him; the other won't even ask me and just believes him--though she has known me for over 30 years and him for about 8! NO, I am not a teenager. I am nearly 43 but am confused because I still love him so much but am also extremely mad at him for what he is saying and doing. I am finally so mad that I will get over him faster now. I was thinking of confronting him about all of this. I feel as if he is slandering me/my good name and feel like I want to tell him to stop or I will sue him for slander. What do you think? Should I confront him?