I've seen a lot of people that say that they don't like when action manhwa have romance in them.
Personally, I love when there's a little romance in action manhwa as long as the fl is not annoying because it brings out the different sides of the mc personality and story. Besides for me, it just makes more sense for someone as handsome and op like the mc(in most action manhwa) to have a gf you know. Like, bro, how could they not have a gf when they're that hot?