Definitely keep it platonic as sex complicates matter when the R isn't secure, as I found out in my case too.
People always want what they don't have so if you don't touch her for weeks, she will be wondering why not and if she's still attractive and she'll want to initiate then!
My H always wants me more when I ignore him and I always have to fight the urge to call him if he has been ignoring me.
