I was hlm she was llf

We have been married for 42 years she over time had become llf . It started 8 years ago only sex was 3 or 4 times a year then down to 1 or 2 then nothing for the last 5 years. Over time her touch repulses me I can only explain it that way. I complained about the lack of intimacy, (we haven't slept in the same room for the last 6 years.) she now wants to get together but I am avoiding it. I want true intimacy not pity sex. Im not sure we have a forward step.