To Love or to Marry

Consider a couple;
Fallen into some trouble.

A matter dialectical;
Threatens their nuptial.

Of a peculiar trait;
These two do partake.

At her word's veracity;
He speaks disingenuously.

When she would deceive;
His talk takes truthful leave.

On one occasion;
Of a conversation;
Four claims exchanged over tea;
In pairs simultaneously.

He said she;
Will love when we marry.
Then with enigmatic resolve;
Will marry when we love.

If at first he dissembles;
Then tells the truth in trembles;
Now conclude from what's above;
Who will love but won't marry;
And who will marry but won't love.