It has been said that there are no sadder words in the English language than 'if only'. There's a fairly good chance that the Bearer of If only agrees. Whether with passionate longing or merely wistfulness, this Bearer wishes it were so. Often a response to the romantic desperation of Alas or the concern of We can get through this, as well as modest refutation of compliments or invitations, suitable replies are many and varied. Trust me urges the Bearer to trust the Receiver, while Regret and Despair convey regret and despair at how matters have turned out. I'll do anything asserts that the Receiver will go to any extremes should the Bearer require, while C'est la vie and Worth a shot ruefully accept the inevitability of some of life’s misfortunes and impossibilities.