Complex sentence: Daniela has been going out with Ricardo for years, but he is still not willing to commit to marriage, and is consistently unfaithful and while Gabriel is engaged to Raquel, what he feels for her is not really love, but lust.
Split into simpler sentences: Daniela has been going out with Ricardo for years, but he is still not willing to commit to marriage, and is consistently unfaithful. And while Gabriel is engaged to Raquel, what he feels for her is not really love, but lust.