<human>: Summarize the given text in a few sentences.

Alright, here's some background information about myself. I have a summer restaurant job that I've worked for the past couple years. It's a small staff and I work with the same three girls every night. We've all become pretty good friends and will go out for drinks after work at least once or twice a week. 

Also, I'm recently single after coming out of a fairly serious relationship. I've been dating a little bit, playing around with Tinder, and generally not looking for anything too serious. 

So, there's this one girl who I work with who has been very flirtatious lately. To the point where it has been commented on by other coworkers. We'll call her C. C will often stand very close to me, touch my arms and chest during conversation, joke about when I'm going to propose to her, ect. I find C to be very attractive, and definitely find myself reciprocating the behavior, but C has a long term boyfriend. 

I've met her boyfriend a couple of times, and he seems nice enough. A little awkward and quiet when he's out with us, but I don't really know all that much about their relationship other than they've been dating for about 2 years. But, that's kind of besides the point

At this point, I'm kind of torn between a strong attraction to this girl, not being an asshole, and not fucking up the really good dynamic that we all have at work. Frankly, I don't really condone cheating, and probably would not do anything with this girl as long as she was still with her boyfriend. That being said, I'm not going to lie and say that I don't enjoy the flirtatious nature of our relationship. To be honest, she probably looks at it the same way, but I don't want to lead anybody on or do anything to mess up the friendships at work. 

I guess I'm looking for an outside perspective on this. I'm just not totally sure how to proceed with the situation. Does this sound pretty harmless, or do I need to stop?
<bot>: Cute girl at work is flirty. Girl has boyfriend. Want to maintain friendship with her. Am I being an asshole?