See Jane Run Weddings

I was angry with my friend.
I told my wrath, my wrath did end.
I was angry with my foe;
I told it not, my wrath did grow.

And I water'd it in fears,
Night and morning with my tears;
And I sunn'd it with smiles
And with soft deceitful wiles.

And it grew both day and night,
Till it bore an apple bright;
And my foe beheld it shine,
And he knew that it was mine.

And into the garden stole
When the night had veil'd the pole:
In the morning glad i see
My foe outstretched beneath the tree.

Can you tell me the meaning of the poem and what are the kinds of poetry devices used?

Thanks in advance. I seriously suck at poems.
best if u can explain it line by line. cos i just started learning poetry ):