What should i do now? Need your advices?

No its not to young to be a husband and another thing is dont contact him. I know how hard that may be but giving him some space will help open his eyes and if he really loves you like he says then he'll come back, if he doesn't come back well that his problem and you will just have to go on. That may sound bad now but really you want somebody who wont break your heart and make you feel bad. That guy is out there so do watcha got to do, just dont talk to him! Im sorry you had to go through that its not fun. I went through the same thing once and eventually I moved on. You will never forget him but its not impossible to love again. Hope I helped.