doubleofive said:

"Tony is a loaner, who can take care of himself. By the end he learns that he needs friends." - Tony's plot in Iron Man 1, 2, 3, Avengers

Really? In IM3 he starts in a relationship, he confides in her the mental troubles he's having first thing, he instaltly lets a cute kid work as his partner. It's only situational that he's forced to be alone much of the film (his armor sidekick is captured, he's crash landed in the snow and thought dead, but he instantly calls Pepper).