Complex sentence: It was announced on May 8,2014 that long time friend Max Green would be joining Falling in Reverse and stepping up as the new bassist/backing vocalist for the band, but Green left the band that same year on October 6.
Split into simpler sentences: It was announced on May 8,2014 that long time friend, Max Green would be joining Falling in Reverse and stepping up as the new bassist/backing vocalist for the band. But Green left the band that same year on October 6.