It feels like the two seasons of Love Class should be listed completely separate. There are underlying themes that are similar in both seasons, for instance, the relationship class some of the characters attend at the college. But where season one was good, season two is absolutely great!
My rating for season one was actually 7/10, but after just completing the second season, I changed my rating to 10/10. I just really loved following along on each of the couples' relationship journeys. And what I absolutely adored the most about the second season, was that there was no forced conflict. The story arcs for each of the couples just felt organically laid out and they built together into this culmination of sweetness.
All of the actors did a great job, they felt sincere to their characters in the story as a whole. I definitely recommend checking out both seasons, but you don't need to watch one to understand the other. And I definitely recommend season two, it's just a light, sweet, and refreshing story to watch.