A love so beautiful was also one of my favorite C-Dramas way back 2017, and it is also quite comparable to Lighter and Princess (Arguably the best C-drama of 2022 because it trends like a hot fire). ALSB was lighter than L&P, because L&P have a lot of scene that can make you cry. It also had the same ML who's a genius and a jerk but still have some differences. Meanwhile, for the FL, they were completely different tho. Next similar thing was the Timeskip (where leads broke up for many years and find their way again) because from L&P they have college days and a timeskip to office/working days, which is both good!! Don't worry that is not a major spoiler because that is basically the ep. 1 of L&P. Actually, when i first saw L&P i quickly thought of ALSB haha both are good but if i were to choose, i'll go for L&P because it was a very well produced modern C-Drama and the romance build-up was amazing!! The OST's, Visual and Chemistry of the leads are also top notch so if you love ALSB then don't miss L&P!!!!
Well, the actor who plays as a mother in both of the series is the same and you'll probably feel the same energy she had with MHIL ahaha. And of course this has the same genre which is forced marriage/pregnancy so you might want to give it a try.