Endless love refers to a love that transcends boundaries, time, and space. It is a love that is pure, unconditional, and unwavering. The concept of endless love has been explored in literature, art, and cinema for centuries. In the context of the movie, endless love refers to the all-consuming passion and devotion between the two lead characters, Lau (Ranbir Kapoor) and Tara (Shailene Woodley).