I don't understand why you keep pressuring him. He's right...two weeks is not much time to trust your changes are real, and it seems he's got some soul searching to do. Stop pushing him.
You are wrapping an awful lot of expectations around your encounters and that's setting you up for a lot of disappointment.
Didn't I already mention the squirrel analogy? How about the castle?
Squirrel Analogy:
If you try to feed a squirrel by hand, you have to hold perfectly still. It will slowly come to you, but even if you don't move, it will sometimes get scared and retreat. But it will return, and get a little closer each time. If you get impatient and make any move towards it, it will run right back up the tree and the entire process starts all over again from the beginning. But if you remain patient, it will come closer and closer until it will finally take the nut from you.
Castle Analogy
Imagine that the WAS is inside an impenetrable castle. WAS is deep inside the castle walls and has no desire to see the outside world. The drawbridge is up and there's a moat all the way around the exterior. WAS has his/her own world right there inside those cold, stone walls.
Then there's you. You're sitting on the other side of the moat. You've got a nice blanket laid out on the cool, green grass, and you're enjoying yourself by having a wonderful picnic all alone. You're absolutely content with this, and aren't even concerned with the castle and the WAS within (in fact, you've got your back to it).
Eventually, WAS gets a little curious about what's going on outside the castle, and decides to take a peek over the walls. WAS sees you, just sitting there enjoying yourself. He/She is surprised, because previously you had been throwing rocks at the castle, singing and dancing in hopes of getting their attention. WAS is wondering what you're up to, and why you're so content. After a while, WAS decides to lower the drawbridge and join you at your picnic. WAS sits down, and you just act as if -- you're happy, confident, etc. Suddenly, WAS realized where he/she is and what he/she is doing, and it scares the hell out him/her. WAS jumps up and dashes back to the castle for no apparent reason. You however, didn't even budge or flinch. WAS peeks back out to see what you're doing, and notices that you're still sitting in the same place, enjoying yourself without concern. Again, WAS is surprised, and eventually comes out again. This time WAS stays a little longer, but again gets spooked and runs back. However, you're still not deterred from enjoying your picnic. The WAS's visits begin to happen more and more, and they last longer and longer. Once he/she realizes that there is no risk for him/her (i.e. that you won't bring up the R, pursue her, get angry, become needy, etc), WAS begins to reflect on things, and begins questioning his/her choice to go to the castle. In time, WAS decides to bring up the R, and this is when you can discuss it with him/her because WAS is ready and has initiated the talk.
