Heartbroken... long rant sorry..

Yesterday my fiancé and I decided we were going to elope at the nearest courthouse I was tasked to ask everyone but his parents because he wanted to do that. Before he got the chance someone else had told his parents and as soon as that happened the following morning his mother calls saying that I supposedly said I purposely chose to get married on a Monday and I didn’t care that they couldn’t be there, if they wanted to be there they would... None of it was true.. my fiancé tells her that HE was the one to pick the date and we aren’t getting married for another 2 weeks that she should be able to request the day off with her job. I call my sister because the only people who knew we were getting married were my mo (who doesn’t like his mother but loves my fiancé as her own) and my sisters.. it only left one sister who’s SO worked with my fiancé’s mother... I asked why lies about me were being told and if they knew who was spreading them since it was at their job... next thing I know his mother is calling him screaming saying how did we know who told them if they didn’t give any names that if I knew who told them everything that was said must be true.. then she continues to try and convince him not to marry me... I feel so broken because they were like my second family.. I don’t understand what I did to make them hate me all of a sudden... we are still getting married but I don’t think they will be there since he told them they were too gullible to be healthy.. sorry for the long rant but I needed to vent since apparently every time I talk to someone my words get twisted and lies are told to my fiancé’s parents...