What should I do?

Should I get back with my ex?My mother thinks i shouldnt cause if my father finds out i am with him again he will kill me.I want to be with him cause i still love him.He ieven told me that he loves me also and wants to be with me so badly.We were together for 6 almost 7 months before he broke up with me.He told me that he wanted to marry me but then he broke up with me and now he says he made a bad choice.We want to get back together and we will do anything to be together again.Other than that my father is being really weird lately.My mom and I can't wait til March so that we can go back to work.I am so happy that I will be 18 in March.