I dunno.
My first drugs were weed, alcohol & cigs at age 12. But I wouldn't say I "instantly fell in love" with any of them. Alcohol made me dizzy & sick & so did weed some times, but I kept using them cause that's what the "adults" & "cool" people did.
I started doing cocaine & ecstasy by age 15, but I wouldn't say I fell in love with them right away or anything either. My older brother dealt drugs & dealt with other dealers, so we were always getting fucked up on something in my teen years. Probably did 50 different xtc pills from age 15-16 alone. I liked it of course, same with cocaine, but I wouldn't say I "loved" them to the point where I had to have them.
By 16 I did my first psilocybin mushroom trip & i absolutely loved it. Became crazy about mushrooms for awhile after that, even though I only had a couple more chances with them when I was a teenager. I've since done mushrooms again in the past few years & now you couldn't pay me to take shrooms. lol I'll take acid over shrooms any day.
And then I'd say I instantly fell in love with tramadol around 19 or 20 years old. They were unscheduled at the time, my mom got them for back pain & she figured they were trash since they weren't controlled or anything. I took a couple & then sat in my room & had a few beers with it. Music became so phenomenal that I just couldn't stop listening to it. So I kept doing it again day after day. Fast forward 10 years & I went through tramadol withdrawal every single month for those 10 years. I think I did the math & it comes out to like 120 times I've gone through tramadol withdrawal.
And then of course around 25 I tried heroin my first time. My friend surprised me with it because she knew I liked opioids & pain pills. I still remember that day. It was early morning, I was on my way to a therapy session down the street. Had just done a DXM trip the night before. So I had a bit of an afterglow. My friend hit me up, said she had something for me & to come over after therapy. I figured it was just another one of her adderall pills she was gonna give me or something. But nope, I got over there, she shows me this light brown/tran powder on a plate & tells me it's heroin & I can snort the whole thing. So I did. Instantly loved it. Spent another 5 years doing that off & on in between doing tramadol too.