This letter asks your lover to cohabitate.
1234, Main Street
Boston, MA 02123
07 April, 2005
<Recipient Address Goes Here>
I think we've come a long way in our relationship, wouldn't you? In the <time> we've been together, we've done a lot and learned a lot about each other. I know there's no one that I would rather be with. So I'd like to propose that we take things to the next step: living together.
I know that's a big step, and maybe it's one that you're not ready to take. Heck, I don't even know if I'm ready. But I think it's at least worth talking about, because there's no one I'd rather wake up to every morning than you.
Give me a call and let's talk about it. I love you, and I think we can make it work. I'll talk to you soon.
encl: <List of enclosed items goes here>