idk what to do 😩

Me & my fiancé got into an argument because he came home from work & I wasn't there he called me & I didn't answer because my phone was on silent. he called again I picked up & told him where I was which was my brothers cookout that was around the corner from my house . he came over & I was sitting with a guy that my SO knows laughing . he came over & told me to come on & I did we ended up arguing & he packed a little bag & went to his sister house saying I don't respect him& it can't be a us into I do. this was Saturday & I haven't spoken to him since because I don't feel like I have done anything wrong . opinions please what should I do ?