In the poem, "Heart, We Will Forget Him" whom is the speaker talking to?

In this poem, the anonymous speaker is trying to get over
or move on from a relationship that is characterised by unrequited love. Having loved
someone, the speaker now finds that she must, however hard it may be, put that love
behind her and move on in life, and forget her love for this man and the way that he
made her feel. Thus, to try and help her to do this, she personifies her heart, trying
to fashion some division between the will and the emotion and our reasonable, logical
minds and our feeling hearts. Consider how the first stanza establishes
this:

Heart!
We will forget him!

You and
I--tonight!

You may forget the warmth he
gave--

I will forget the
light!

Note how the heart it
to forget the emotional warmth that this relationship brought the speaker, and the mind
is to forget the way that the relationship changed the speaker's view of the world. Thus
the speaker tries to divide herself up into two elements in an attempt to forget the man
she can now no longer love.