I like puzzle games, and I loved this. I would play a fully fleshed out version with more levels and mechanics, if you can think of them! The theme of trying to take as long as you can walking home with the person you like is very cute.
Traffic lights are a great obstacle, and trying to time it right so you land on them when the light is red feels very satisfying.
One gripe with the controls - it felt annoying having to move my mouse back and forth to select the directional buttons - a button to cycle through them would have been nice, though it might affect the challenge of the game.
I assume you had a list of possible other ideas to implement but I'll throw the one that spring to my mind - a patrolling street dog/cat? You'd obviously want to stop and pet him to waste more time, haha. The challenge would be timing your walk to merge with the creature, who is constantly moving.
Overall, really good work!