So I broke no contact last night like an idiot.....

So yesterday I was doing great then I saw my ex wife with what seem to be her new fling or whatever and I wasnt gonna say anything but then I noticed she was still using my last name on everything. So I went off on her and she told me she isnt seeing anybody and that she has just gone out with her friends and co workers and she knows shes a mess so she isnt trying to get involved with anyone. Anyway we talked until about 1 am and I basically left it as If you truly havent seen anyone and want to heal (she has never been alone until now) then ill wait. But I am only waiting until october because that was the deadline I gave myself to start looking after healing from the divorce. Either way I feel dumb and all the progress of no contact is gone and she knows she still got me by the balls.