Had a crush for 5 years which goes up and down in intensity. He works for the same company as I do but we only bump into each other occasionally or when he comes to my office. Over the last few months, he's been the one getting in touch or visiting me and I've tried to be polite but very casual recognising it's really time to let go. Last week he popped his head in, said something really formal and left. I fought the urge to message him. He popped by this morning looking so gorgeous but barely said anything to me though asked if I could send a quick update about some work he'd just done. Dropped him a message which then escalated into a chat. Why is it so hard to cut him off and keep him at arms length?