Ibn Hazm says:

170. The man who is unhappy in love is the one who is racked by a passion for one whom he can keep locked away and with whom he may be united without incurring the wrath of God or the criticism of his fellow-men. All is well when the two lovers agree in loving each other. For love to run its course freely, it is essential that the two do not feel bored, for that is a bad feeling which gives rise to hatred. Perfect love would be if destiny forgot the two lovers while they were enjoying each other. But where could that happen except in Paradise? Only there can love be sure of shelter, for that is the home of everlasting stability. Otherwise, in the world, such feelings are not protected from misfortunes, and we go through life without ever tasting pleasure to the full.

Notes:

• I (and prof, undoubtedly) concur.