Begin by cooking your pasta according to the package directions and chop basil.
While water is boiling, heat oil in a large skillet over medium heat. Add garlic and red pepper, cook, stirring constantly for 1-2 minutes. Add tomatoes, salt and black pepper. Cook, stirring constantly, for 5 minutes. Tomatoes may need some help reducing in size, so pierce them with a knife to release their juices; cook for 1-2 minutes longer. Remove from heat and add basil.
Divide pasta among serving bowls; top with tomatoes and pine nuts. Serve with sliced nectarines.