One main theme could be forbidden love. Since it's a secret love, there are likely barriers that make the relationship not publicly acceptable. Another theme might be sacrifice. The lovers may have to sacrifice certain things, like their public image or relationships with others, to keep their love a secret.
Well, in a 'Secret Love Telenovela', perhaps there are two lovers. One is a famous actor and the other is an ordinary person. They meet by chance and immediately feel a strong attraction. But the actor's career and public image mean that he can't openly be in a relationship with someone not in the spotlight. So their love is a secret. They go on secret vacations together, and the ordinary person has to endure being in the shadows. But as time goes on, they start to question whether they can keep this up forever and if they should fight for their love in the open.
Love is likely to be a main theme. Since it's called 'Timeless Love', it probably emphasizes the endurance and constancy of love over time.
One possible main theme could be health anxiety. Since it's about a hypochondriac, the character's excessive worry about their health would be a central aspect.
As I don't know the full story of 'Tangled Hearts Telenovela', it's hard to say the exact main themes. But common themes in telenovelas are love, family, and betrayal. So perhaps these could be among the main themes in it as well.
One possible theme could be redemption. If the characters are getting a second chance, they might be trying to make up for past wrongs.
Love is likely to be a main theme. In many telenovelas, the journey of the characters towards finding true love is a central plot point. It could also be about family, showing the relationships between different family members, both positive and negative.
The main themes include love, as Eva Luna's love story is central to the plot. Another theme is social class differences which create many obstacles for the characters. Family also plays an important role, with family secrets and relationships being explored.
Love might be a main theme. In a telenovela, love often plays a crucial role. Maybe the characters are given a second chance at love, either to rekindle an old flame or start a new relationship after a failed one.
Love and betrayal could be main themes. If it's about falling into temptation, there might be a situation where a character betrays their partner's trust due to some form of temptation, like the allure of a new love interest.
Since I don't know the full story, I can't say for sure, but it might include themes of perseverance.