switched antidepressants and suddenly im not interested in the LS anymore, was the LS just a depression symptom this whole time

this is gonna be uncomfortable to type out. im 42, my wife is 40, married 13 yrs, in the LS 7 yrs, auckland. ive had recurring depression since my late teens, on antidepressants on and off the whole time. last spring i switched from one pill id been on 5 yrs to a different one bc the first one had pooped out (yes thats the actual clinical term, it happens). new pill kicked in around july. and within about 4 months of being fully on the new one i started noticing something i didnt expect. i wasnt interested in the lifestyle anymore. not against it. not anxious about it. just... uninterested. like the way ud feel about a hobby u used to love when ur priorities shifted. i wasnt thinking about the apps. i wasnt looking forward to club nights. i was suggesting we skip ones we had on the calendar. my wife noticed before i did honestly. and ive been chewing on this for months bc what does it MEAN. for 7 yrs the LS was a huge part of my identity. i thought of myself as a lifestyle guy. i was the more enthusiastic one of us two. now i feel like i could take it or leave it and im scared to look at why. part of me thinks the LS was meeting a need that was actually about my untreated depression baseline (intensity, novelty, sensation, feeling alive) and now that the depression is actually being properly treated for the first time in my adult life, that hunger has just gone quiet. like the LS was filling something the right medication is now filling correctly. but another part of me worries the new med is flattening everything including healthy desire and i need to flag this to my psych as a side effect and not as "im just less interested in swinging now lol". and honestly its probably both, plus aging, plus 7 yrs is just a long time, plus the depression-noise made it hard to know what i actually wanted underneath. my wife has been amazing about it btw, she said "ur health first, we'll figure the rest out", so no pressure on that side. but i want to figure out which of these it is bc the answer matters. has anyone been thru a med switch that changed their LS interest level. how did u know which kind of change it was