Sounds like potentially good progress for you on the R front but take it slowly so as not to spook the squirrel.
Celebrate the birthday if you want with your friend - but don't do it as a "move" or something designed to get a reaction from W.
You are doing well so stay the course and give it sometime to develop.
Stay strong!
Me-48,W-51 M-22,T-24 S- 18,16,9 Feb-Jul '11 Away from Home, after initial B date Aug-Dec '11 Back at Home on couch Dec '11-now Same bedroom, room mates only Dec '14 W files initial D paperwork