No problems with the hard line with regards to any non-S-related contact between the two of you but cover your tracks and facilitate contact between S and W. If bedtime doesn't work, bring it forward in the night.
Me: 31, W: 29 T: 4 M: 2 Kids: 3 (SS: 7, SD: 4, D: 3) Separated, still living together: Nov 2013 Separate bedrooms: Feb 2014 W working away; kids with me: Nov 2014