Any good sports and or slow burn romances?

looking for TRUE slow burn dark mm romance (rina kent vibe but actually slow)

hi! i’m trying to find dark mm romances with a similar vibe to rina kent (especially her mm stuff), but where the slow burn is REAL. i’m tired of books being labeled “slow burn” and then they’re together by like chapter 7

what i’m looking for:

actual slow burn (like 50–70% before anything real happens)

enemies to lovers / hate → tension → longing → eventual love

preferably dark themes (mafia, psychological, power dynamics, etc.)

lots of tension and emotional buildup before payoff

strong character development / trust building over time

my ideal ratio is literally:
~30% hate / conflict
~40% tension + longing
~10% love / payoff

what i don’t want:

cheating (between the main couple)

threesomes / poly“dad” dynamics / incest vibe

on-page sa by either of the main characters

series where the relationship builds over multiple books

bonus if it’s:

mm only

basically i want something that HURTS before it gets good 😭 any recs??? THANKS UR A LIFE SAVER