How do the different types of love that Shakespeare explores in A Midsummer Night's Dream contribute to his message about love?

We need to be aware that this play presents us with a
number of different couples. Not only do we have the young Athenian lovers, Demetrius,
Lysander, Helena and Hermia, but we also have the older and possibly more maturer
examples of Theseus and Hippolyta, who are due to be married shortly, and Oberon and
Titania. Although Oberon and Titania spend the majority of the play feuding, their final
reconciliation combined with the marriage of Theseus and Hippolyta seems to present us
with a stabler vision of love compared to the antics of the youthful Athenian lovers,
whose various changing infatuations point towards the inconstancy of love. Clearly, if
there is a message about love, it is voiced by Helena who
says:

Things
base and vile, holding no quantity,

Love can transpose to
form and dignity,

Love looks not with the eyes, but with
the mind,

And therefore is winged Cupid painted
blind.

However, in spite of
the way that this play shows that love is ruled by emotion and not by reason, the ending
and the way that things are restored to "normal," reinforced by the marrige of Theseus
and Hippolyta and the reconciliation of Oberon and Titania, suggest that there are
different stages to love, and once one has passed the youthful stage of infatuation and
inconstancy, you are ready to start on a more sober and mature kind of love that is
represented by the bond of marriage.