Dreaming of falling into the river: encountering problems in life, or representing the pressure in real life, or representing losing self-confidence.
I dreamed that a man jumped into the river to save me: Do you know this man? If you don't know, it means that things will get better with the help of noble people.
Dreaming of hugging and kissing in the river: it means that your concern for love has increased and your desire for love has increased.
Your background and present situation are the key to dream interpretation. Good luck!