Thank you for the detailed feedback! I really like your interpretation: slowness of the heartbeat = be patient in love. I will be honest I didn't think about that when I designed it ;) I agree that sometimes the player needs to go "blindly"/"randomly" and wait (especially in the open area), I was thinking of tuning the rays length or maybe adding an action which the player can voluntary make an heartbeat :P
Well spotted, "Thomas Was Alone" was a big inspiration for this entry :)