This movie is brilliant, but I think I had a different perspective watching the movie as a FA. As you mentioned, by some remote chance Tom (Joseph Gordon-Levitt) and Summer (Zooey Deschanel) appeared to be completely compatible and congruous while being in close proximity with little to no resolve on either's part. Tom courting Summer seems to occur as a part of the natural course of their relationship. The difference between him and I is that Tom is fortunate enough to pine over a lost lover who may have been perfect in almost every sense, however I pine over someone that likely does not exist or someone who is unattainable due to obstacles I cannot seem surmount. I don't wish to trivialise Tom's problems, but I think it's a crucial piece of wisdom to hold that an obscure reason or development can drive two people who were once inseparable, apart. I know it's pessimistic, but I think I've learnt not to cling too tightly to the romantic pipe dream of there being 'the one' or a 'soulmate' for everybody; that is pervasive in society today.

If I am lucky enough to find someone to love, I don't think I would have as much expectations of the relationship to be a certain way. I think a relationship of this depth is more about companionship, mutual support and reciprocity even if there's some friction between us. It's impossible to ever truly know someone, but I like to think there is someone out there to care for and cares for me back despite our differences.