Two things immediately came to mind:
1.
It's really frustrating because as you can probably tell, I really like this guy, and all I want is to know if he feels the same but I can't ask him I'm terrified of ruining what we have already.
What you have already? What exactly do you have other then him giving you the time of day and stealing a kiss? Has he been dating you? Asking you out just you and him? Where do you "hang out" with him?
2.
I've also recently found out that
all of his colleagues in his area know about me and what happened between us so he's obviously talking about me!
This is a red flag. You're not even official and he's telling people he copped a kiss off of you yet he's not giving you any indication that he wants to do more then cop a kiss (or more)?
A third thing that came to mind is, do you know for a fact that he's single?
Sure, it's obvious he likes you but at what capacity he likes you is the question. Stop falling all over yourself with false feelings. He's not shown you in anyway that you can be vulnerable to him and be safe doing so. Check your feeeeelings at this point. Give him your phone digits and tell him to feel free to hit you up. Then see what he does with them.
Keep in mind that he's blabbing about what he's accomplished with you so far. You're taking that as a good sign when it's anything but that.
“The willingness to accept responsibility for one’s own life is the source from which self-respect springs.” ~Joan Didion