Should I write him a anonymous love letter?

There this guy I really like at work. I wanted to write him a love letter and send to his house. I can look up his address online. he has a girlfriend but I think he likes me. he talks to me and gets close to me. the issue is that I don’t want him to find out and I been working at a new place and everyone likes me at work so I don’t want to ruin it by doing that. everyone will think I’m weird and a stalker and he will probably get me fired, what’s the chances of him finding out if I send it anonymously?
Should I write him a anonymous love letter?
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