Alone in the Universe (2015)

Petra is funny, outgoing, and smart, but she can't commit to a relationship deeper than a one-night stand. Then she meets Oscar, a socially anxious web cartoonist who can barely say more than two words at a time. She starts to draw him out of his shell, and he starts to bring some stability to her life, but if they want to build a lasting and meaningful relationship, they'll each have to overcome deep personal wounds.