I am an IsTP, and my partner and I both have motorcycles, which is a big one. We also play video games together, which isn't as outdoors-oriented as I would like it to be but fun nonetheless.
I work out (weight lifting), am looking to get back into martial arts if I find a place that isn't too regimented with the ritualized elements and just gets down to the nitty gritty... but I would
love (adore, enjoy, jump) it if my partner did martial arts or cliff diving with me. Getting to workout, get into the physically exerting "zone" of focus and being able to watch the person I'm most attracted to get sweaty?
- Check
- Check, and...
- Check for a good time.
It has become more important to me, because spending time with a partner in a way other than living in the same room (i.e., purposefully bonding & doing something together) seems to become different once ye live together and have been with each other for a while - you aren't specifically seeing each other once a week or whatnot to get to know each other, like in the beginning. Ye can end up spending a day or two within ten feet of each other but
haven't actually spent any time with each other, if that makes sense. And I don't always feel like talking.
So... there are so many things to try, perhaps think of something you think ye'd enjoy and ask him if he would as well. Physical or mental, though I think physical is better if ye have the choice. You already mentioned sailing, so I won't make random suggestions.
Good luck with all o' that, by the by.