For the record, my words "I don't want to remain in a sexless marriage"

Call it what you like. Conventional wisdom says that an ultimatum is a boundary.

I don't care.

M 53 W 54, M since 98
D15, D19
8/2013 discovered EA, W maintained contact with OM
until 10/14
7/2/17 W said she wanted S, 7/25/17 moved out of MBR
12/17 W says moving out 5/18, W still in home.