I guess while you are GAL, you probably don't want to forget the situation you are in now to avoid overdoing it/pursuing, but I'd guess you are feeling a lot better these days. I hope many of the good feelings you have you can remember are because of your hard work trying to understand him and you, and then making very hard choices.
Ideas... - low pressure, something new instead of something full of memories (excite vs remind)
- physical enough to get the good brain juices flowing, but relaxed enough to get in conversation that isn't all about R
- avoid getting drunk situation (alcohol is technically a depressant) or places that would make a single life seem care free and fun
Places... - bowling? - games night at your/his house?