wearing my heart at arm’s length

I like my co-worker. We get on so well, my cheeks flush red and my gut fills with butterflies. Our humour lines up so well and when we laugh, we catch each other's eyes. I chat with him on snapchat. But I believe I'm reading too much into it because I'm a romantic. A romantic who has already seen our future and it not ending well because we work together. And he's younger than me. I guess I'm more of a pessimistic romantic with a vivid imagination. Our work hasn't isolated yet but I feel heartbroken not being near him. Should I say something? If it's a no from him, at least I have a reason to work from home. But if he says yes... well damn, we got to be at least 1 metre away from each other. Fuck.