<human>: Can you succinctly summarize the text in 1-3 sentences?

So this is gonna be hard to flair so I guess I'll put it under Relationships.

I started a new job in March. It's a retail job so honestly I didn't see myself being friends with anyone, let alone a girl. So I met this girl who I work with and when I first saw her, I was initially attracted to her physically and I admit, I was sexually aroused by her.

As the weeks went on, she and I grew a bond. We're both goofballs and we share many of the same interests and we both make each other laugh. I feel a connection with her.

Fast forward a month ago, she tells me she's been dating a guy who basically worships her to the point where he wants to pay her bills, pay for her needs and even marry her within the next year.

So I was cool with that then she starts telling me privately about how she likes to have sex...rough sex. I was astounded yet aroused by her again.

Now I'm at the point where I'm happy for her and I don't want to do anything to ruin it yet I want to do something with her just to get it out my system.

This girl is seriously awesome and special and I don't want to ruin it by any lustful thoughts or even suggesting a FWB situation. That would be wrong. What do I do about these feelings I'm having?
<bot>: I'm falling for my best friend but she has a boyfriend who is intent on marrying her and while I'm happy for her, I'm conficted.