Search Results: talking bad after a break-up

My parents broke up about 3 months after I was born because my mom cheated on my dad. The breakup was very bad and both of them hurt each other mentally in the process. I am currently 15 and gonna turn 16 in December. I guess I've always been a daddy's girl because my dad said from the get go I've always wanted him and never my mom. In 2007, my mom has a severe mental breakdown with drugs and tried to kill herself. My dad got full custody of me then and he also met my wonderful step mom that year. They got married in 2013 and she is so nice to me. I also have a 3 year old brother because she got pregnant. Anyways, my mom and dad haven't talked since 2007. Before that, I only got to see my mom on the weekends and even then they weren't really talking. I remember my dad used to cry about my mom all the time and say all this nasty shit about her. My mom has always had a bunch of different boyfriends, and she also has other kids. My mom messaged me on Facebook and invited me to my aunts (on her side, who I barely know) wedding that's in about two weeks. I told my dad and he said I'm not allowed over at my moms house and it's up to me whether or not I want to go to the wedding but just remember that my mom never loved me and wanted to abort me and she's also mentally unstable which is why I live with him. My step mom thinks it's a bad idea and I should stay home. My dad also doesn't want to talk to my mom but wants to find more info on the place the weddings at and will drive me there and pick me up. He doesn't trust my mom. Would this be awkward? I think her other kids are there too. Should I go? Would it be weird?