Avoid making the romance the character's only personality trait. A character with their own hobbies, fears, and career goals is much more attractive to a reader.
A long-term friendship evolves into romance, often involving the fear of "ruining the friendship". 📖 Remarkable Real-Life Stories Real relationships are often as dramatic as fiction: Avoid making the romance the character's only personality
Consider the gold standard of romantic tension: Pride and Prejudice . Elizabeth Bennet and Mr. Darcy are not compatible on paper. He is a brooding aristocrat; she is a witty commoner. He represents snobbery; she represents prejudice. Their attraction is born from conflict —the friction of their opposing worldviews. Avoid making the romance the character's only personality