I think it's more that he believes part of loving someone, to him, is trusting that person.
That doesn't mean all cases of trust require love.
Know how a square is a rectangle but not all rectangles are squares? At the same time we don't call a square a "Square rectangle", we call it a square with the understanding that it encompasses a rectangle in its foundation.
Kal seem's to be suggesting that trust, and likely other emotions and feelings, are inherent in a relationship built on love as they come about due to the love you have for that person. Not necessarily that you can't have trust or the other feelings/emotions he may equate with love WITHOUT love as well.