I'm NOT looking for a romance novel where either characters fell in love at first sight, first meeting, or whatnot. I'm not into BL. I like slow romance. ☹️☹️☹️ Xoxad I can't find any novel to my liking these days.
I hope these might suit your descriptions, if you haven't read it A Lifetime of Peace and Care: the MC and ML have a Flash Marriage yet their feelings develop slowly Rebirth on the Doors to the Civil Affairs Bureau: the same case as the first one Perfect Fiance: the MC takes time to accept the ML but the ML has long had feelings for her Please Confess to Me: the MC slowly develops her feelings to ML, the ML has loved her since childhood I'm Pregnant with the Villain's Child: the MC fully accepted the ML after two years while the ML has fallen for her first due to her kindness and virtue The Villain's Mother: the MC and ML are like business partners initially yet over time they develop feelings to each other
https://www.novelupdates.com/series/a-mistaken-marriage-match-a-generation-of-military-counselor/ https://www.novelupdates.com/series/chongfei-manual/ https://www.novelupdates.com/series/my-disciple-died-yet-again/ https://www.novelupdates.com/series/the-rice-pot-next-door/ https://www.novelupdates.com/series/ascending-do-not-disturb/ https://www.novelupdates.com/series/after-the-divorce-with-the-male-god/ https://www.novelupdates.com/series/my-wife-is-my-life/
The Emperor and the Female Knight (also called The Emperor and the Knightess) - a really slow romance, no arranged marriage/marriage of convenience between the leads, it takes quite awhile for love to develop.
If I’m not mistaken there was a really unexpected romance in this story https://www.novelupdates.com/series/the-devil-cage/ (Ie I remember it was some survival with game style, but not sure if I remember the correct one, but the romantic part was rather interesting and not at all “at first sight “)
Reborn as My Love Rival's Wife (hilarious MC, guaranteed laugh at every chapter. ML falls in love first, the MC is quite stiff and takes a long time) Our Second Master (An amazing short story that has more emotional depth and character development than most novels ten times its length. The writing is compact but meaningful, with the interactions described richly. ) Ambiguous Relationships (No boring moments, realistic relationship and flawed characters) Rebirth on the Doors to the Civil Affairs Bureau A Game To Make Him Fall Marriage Concerto I also love these but the story begins from the middle of their relationship. I Don't Like The World, I Only Like You A Love So Beautiful