my husband has a "type" we keep playing with in the LS and I am visibly NOT it, physical insecurity spiral

married 9 years, in the LS about 18 months, weve had probably 8 or 9 successful meets with other couples. last week I noticed something kinda obvious in hindsight... every woman we have played with so far has been petite, blonde or light brown hair, kind of athletic, late 20s to early 30s. like all of them. I am 5'9, dark hair, curvy, mid 30s. literally the opposite of his "lifestyle type". he picked all of them off the app or recommended them to me. I approved them all bc I thought they were hot too. but I hadnt clocked the pattern until last week and now I cant stop seeing it. and my brain has gone "so this is the body he wanted but couldnt have, and the LS is where he gets to have it on the side". he says no, he says he is attracted to me first and foremost and the LS thing is a separate flavor. but how do you tell the difference between a "flavor" he wanted on the side and an "actual preference" he hid from you for a decade. like genuinely how do you tell. I am not pulling the plug on the LS over this but I am in a real bad place about my body this week. the women he picks on the side are not me. and Im struggling to make peace with what that says.