For what it's worth, when my wife and I first got together, she was about to go O/S to do PBP and I was only a sometimes rider. 3 weeks later we were touring in France together! On that first trip my wife was very focussed and set long days for training and I had to struggle to keep up! Still, we had a great time and since then my fitness has improved and we've gone on to do a number of tours together involving the Alps & Pyrenees as well as trips to New Zealand... If you want to encourage your partner, set realistic distances and choose a location which you think he will most likely enjoy and you'll give yourself the best chance of getting him hooked....