I'm in love with my coworker but she has a boyfriend

I'm in love with my coworker. However, she has a boyfriend so I cant tell her. we've hung out alone together before and she definitely seems to enjoy being with me. and she talks to me about absolutely everything and we make good eye contact and I feel like have great chemistry, and she always looks directly at me when I'm driving. not only this, but shes in a terrible situation with her boyfriend. they live with his dad and just got an eviction notice and she says shes going to try to find an apartment with him, and I just dont see how it could possibly work...but I've been afraid to tell her how I feel both due to the bf, and because she isnt exactly in a great place right now.