<human>: Can you succinctly summarize the text in 1-3 sentences?

So here's the deal: I live with a wonderful woman (I'm male, btw). We are not romantically engaged, but do have an amazing friendship. We have commented multiple times that we plan on living together for the long-term foreseeable future.

However, I am widowed, and she has a crippling fear of commitment, and neither of us is ever going to get married (again, in my case). Or at least we aren't even considering the idea.

Since we are not in a romantic relationship, but we do cohabitate - and have for a while, and will for quite some time - are we still eligible for a domestic partnership? My state does not have common law marriages(Tennessee), and we'd each want to protect our own property and interests anyway. But I would really like for her to be able to share my medical insurance, have power of attorney for me if I'm in the hospital or whatnot, and be able to receive my death benefits should something really bad happen.

Like any good citizen of the internet, I asked Google first, and read every Wikipedia article I could find. I also searched r/askreddit, but only found 3 questions, and none of them really helped. So, lawyers (and armchair lawyers) of Reddit, ideas?
<bot>: Long-term cohabitation with opposite-sex housemate, never getting married, will a domestic partnership let me give her my insurance benefits, etc?