Who would get the loss in this situation?

Score is 1-0. The starting pitcher for the first team pitches 7 shutout innings, but walks 2 batters in the 8th, and is replaced by a reliever. The reliever gives up a double to score both baserunners, and the second baserunner proves to be the winning run in a 1-2 loss. Who gets the loss here, the starting pitcher or the reliever?