<human>: A co-worker who I hardly know confessed her love for me in a text message last night. 

I am engaged and she is married with two kids.

We have never seen each other or spoken outside of work. Even at work we hardly talk to one another.

I have never flirted with her or done anything that would show an interest, and we only discuss work related topics.

She states that I am all she can think about.

Her husband also sent me a friend request on social media.

Could you distill the essence of the text into 1-3 sentences?
<bot>: A co-worker is in love with me. We have zero contact outside of work. I am engaged, and she is married with two kids. I have not replied - any advice?