<human>: I'm 25 and he is as well.  We've been in a serious relationship for almost eight months.

My boyfriend recently started a new job and became fast friends with a female coworker who's about the same age as us.  My boyfriend has a very specific type and by that I mean:  Petite, dark hair, blue eyes, classy, smart, etc.  She's *all* of those.

He's always in a wonderful mood when he gets home from work and I sincerely think it's because he got to spend the entire day *with* *her.*  

She's disgustingly sweet towards him and it makes me uncomfortable.  For example, she texted him last week:  "Mikeyyyy, would you like me to bring you coffee.. I'm at Starbucks =)"  He replied.  Then she sent a text back that said, "Okayyyy =)"

I jokingly asked him a few days ago if he secretly had a crush on this girl and he just laughed it off without answering me, then he immediately changed the subject.

How can I talk to him seriously about this without coming off as a territorial girlfriend?  He's never given me a reason not to trust him and he's never lied to me as far I know.  I'm so bothered by this girl but he doesn't seem to realize it because he's in this euphoric happy mood all the time.

Condense the text into a few key points
<bot>: My boyfriend (M25) has a new female friend at work that I think he likes.  I'm (F25) unsure of how to talk to him about it.