So my partner and I met this couple on a lifestyle/threesome app, and we've hung out a few times and really like them and we're kinda new couple swapping side and don't know how/when you initiate something. On the app this couple mentioned also just looking for like minded kinky people as friends, so we just don't know how to initiate sexually/see if they like us in that way back. Do we just bluntly ask, do we initiate some flirty body contact. My partner and I have had threesome experiences before but it was mostly with girls we met and setup a one time fling with in an app, not really a couple swap with people we also want to be friends with. Would love advice from those with experience