A 41-year-old man will spend the rest of his life in prison after shooting and killing his daughter’s ex-boyfriend outside a quinceañera in Gainesville nearly two years ago. Valentin Garcia pleaded guilty Monday to shooting 26-year-old Santamaria Avelar three times on a June 2010 night. The plea came just before his trial had been set to start in Judge Bonnie Oliver’s Hall County courtroom.