A work colleague and I spent several weeks exchanging what started off as flirty texts but then quickly progressed to sexting and photos. We called time on it for various reasons, then a few weeks later were in contact again, same happened, called time again.
We never arranged to meet so it went no further than the messages and have bumped into each other on several occasions in / near work and have been friendly and professional, no one at work is any the wiser.
I cant stop thinking about him though, and it's really starting to annoy me! He often has to use a meeting room v close to where I sit, so often catch sight of him when I go to get a drink or as we cross over meeting rooms etc. This then leads me to plan my outfits each morning in case I bump into him, always make sure I look nice etc, and its exhausting!
I know I sound pathetic. How on earth do I go about getting myself out of this ridiculous crush? It's such a strange situation as we didn't physically do anything but, let's just say, we know each other, ahem, rather well 
My best friend tells me just to cut him off and avoid him but it isn't actually possible to do that, we have to work together and I often dont know if and when I'm going to bump into him. It was ok over xmas as he was off so I thought that would get my head sorted, but it's just as bad now hes back.
Any advice appreciated!