<human>: I first met this friend at work. Slowly we got to know each other at work and over text, and I learned what an amazing person she is. She was so easy to talk to in an open and honest way, so smart, so beautiful. Our conversations never ventured into the realm of romantic relationships.

After talking for a while, she eventually admitted that she had developed a crush on me. But as she admitted this, she explained she was currently in a committed relationship. I was the first to make her doubt this serious relationship with her boyfriend, and she asked that I give her space to distance herself from these new feelings. She wanted to remain loyal to her partner.

I completely understood. I never admitted that I too developed feelings for her. I said I only ever wanted to be a friend. I figured being honest about my feelings would only make things more difficult for her, so I kept quiet and agreed to give her space.

Now, we have resumed talking - as just friends. I told myself that, and I figured the residual feelings I had for her would go away. 
But the more we talk, the more I become enamored with her. I am ever more convinced that she is just the one I've been looking for. When I talk to her, it almost becomes a chore holding my feelings back because we so openly talk about everything...and yet I can't say the thing screaming loudest in my head because I don't want to lose her as a friend. It is emotionally exhausting. 

Is there anyway I can be honest and make this friendship work?

Could you distill the essence of the text into 1-3 sentences?
<bot>: told girl in a relationship that I only want to be friends, even though we had mutual feelings for each other. Now hiding feelings is taking an emotional toll on me.