a certain lady

So I really like the poem "A Certain Lady".  It's sad.  Poor lady in the poem.   Wonder if the author of that poem, Dorothy Parker, really felt that way?   Did she just write it to be writing a poem?  Or did she really experience something like that and the result was to poor out her heart on paper?  It reminds me of what I've gone through.  I tried to make myself look pretty, and yes, he talked to me.  But did he really notice me?  So yeah.  I like this poem.  Lol.  I took it to mean that she and the man to whom she is referring are friends, maybe even best friends.  And since they are such good friends, he tells her of the girls he dates.  She, however, can not let him know that she loves him.  So she listens to him tell her of these girls, but inside, she is hurting.  The last two lines of the poem, "And what goes on, my love, while you're away, You'll never know.", were said in class yesterday to mean when he has gone away, she had guys over too, that he doesn't know about.  However, it could possibly mean that, while he is away, she cries and wishes that he were with her.  Perhaps that's what she meant when she said he would never know....