You can see they both looked up to each other. In a lot of ways they were more like brothers, but in other ways Obi-Wan was like the father that Anakin never had. Years later, we saw a more mature Anakin (in age at least) become a Jedi under Obi-Wan and you saw the dynamic shift as now Obi-Wan was holding the same role as Qui Gon. Then he watches his master die, someone he looked up to as a father (as many padawans did for their masters) and was ordained to take in Anakin as his pupil at the behest of his Master. He saw himself the extraordinary talent and shared his Master's disposition about Anakin being the Chosen One to bring balance. Obi-Wan as a padawan saw how much his Master believed in the boy, and followed him as a good student would and trusted him. I don't know why I didn't realize this until I found this song, but if you really think about it, George Lucas beautifully wrote the story line for Anakin in the prequel trilogy. Met up with Darth Maul and now he's toast

Little Hotshot flew his plane and saved the day May be Vader someday later - now he's just a small fry How his midi-chlorians were off the scale So we took him there and we told the tale

And he left his home and kissed his mommy goodbye

The saga begins