you know those secret clandestine relationships are hot because of the secrecy it would appear that you are creating one within the marriage relationship
and all I can say is 'foot massage appears to be working'
I think you are doing good and you are just following her lead in this which is great and is working for you so keep doing it
also I understand what you say when you said you weren't thinking anything it was just nice to sit with a person you trust massage their feet and 'zone out'