I am going to do something brave

In about 10 days, I am going to drive about 70 miles to the home where my ex-boyfriend, and this guy has been a good friend for many years, is now living and ask him to marry me. We are both about the same age (76) and neither of us in good shape. He is in a wheel chair (rheumatoid arthritis) and I am a mess with a series of painful conditions. My pitch to him is that I love him and would like us to retire together to an assistive living facility in Baja, Mexico. He is living with his niece who owns a very nice home with a pool and who takes good care of him. However, I know he is lonely there because he was forced to move out of a city where he had many friends, just as I was forced into leaving my old neighborhood (illegal eviction, my old apt. is now an AirB&B). Many of our long time friends are dead now.
I am going to pitch my plan to him; I think we should team up and move to Baja together to an assisted living facility there with a large shared room. We could afford that while neither of us can afford a care facility in the US.