The most important rule of thumb in love is that we want what we can't have.
Don't ever talk to her or meet her or look at her picture again. Ever.
Your only other option is to date your love's friend, have her fall in love with you, and hope your love starts to feel she made a mistake in passing on you. But that makes you into an awful, awful person. So get her out of your life, because you're just an interloper.