That balance between the two of them is why opposites attract.Emphasis mine.Actually, come to think of it, the incident with Lenara Kahn (Khan?) makes a stronger case for Dax's loyalty to somebody she truly cares about.
Does she truly care about Worf?
Perhaps one is more manly by how he looks and how much he growls and scowls, not by his intelligence and maturity.
I'm not questioning Jadzia's loyalty to those she loves and cares about. In fact I think Worf's integrity is more at question in that regard, with sending Alexander to his parents the second or third time, when they'd already said they were too old to handle him, and all that BS about keeping the boy with him.
That's more the fault of inconsistant writing than Worf's character traits.
Considering how honor bound Worf is and how he dealt with his own absent father issues, I never saw Worf as the type to keep abandoning his own son. I'd think Worf would be more driven to have his son by his side and too teach him all that Worf never had.