OK I have figured out the "almost" kiss now.
Bear with me on this....
What if, in the future, this guy comes to realise that he is gay.
His older self sees his younger self and thinks "mmmmmmmm....yea baby..."
The younger self is a little confused, but the older self is definitely making a move for the kiss.
After all, he likes himself so much that, yes, he would do the younger version of himself...
The younger "not yet gay" self however is a little confused, which is why the video was cut just before the kiss, and this guy rushed back from the future....