BL adult age gap relationships! All of them are at least 18+, but some are still questionable bc of how long they've known each other, so be warned before reading. Some may have been in HS before they started dating, but all are adults when they start dating. That being said, I'd say like 80% of this list have healthy and morally acceptable age gaps (I only included the iffy ones bc I already read them and while they may not be my cup of tea, maybe someone wants to read it)
•All are manga except for one manhwa right now Sauce: Your Affection Brings Me To My Knees (It's Josei, not BL)