I personally think having a second phone is riskier if it were to be found. I use my personal phone but stick to 1-2 regular and "trusted" masseuses. My wife knows I get "genuine massages" on a semi regular basis anyway so even if I forgot to delete the text messages, it wouldn't be too suspicious. I have no other devices linked to my phone and have face ID setup. My wife doesn't know my pin code, but I've given her my phone on plenty of occasions so she doesn't become suspicious. I always time my massages to coincide with me being in the office, as the people I see are within walking distance of my office. On the times in the past I have gone further afield, I've always given a genuine reason to visit that area and make sure I do whatever I said I was going to do. We have joint and personal accounts and my wage gets paid in to my personal account. I deal with all the finances as thankfully my wife has no wish to get involved. Been doing it for a number of years and never once been close to getting caught.