Well, they do say chemistry is important.
I must say, in some way, her boyfriend was...a wingman? By getting her to ask her co-worker(our protagonist) to cover her shift by letting her skip, she found the perfect partner.
So, in a sense, hey boyfriend...netori'd himself? Or rather, set it up for 'em. At this point she really oughta just dump him and go out with this guy. I mean, they tend to have the...quiet night shifts together. Just the two of them. Quite the perfect environment for some sweet hentai loving.