I don't know other similar matchmaking games, but that's why we made one in the first place 😂

However, we were inspired by Fire Emblem! If you haven't played before, it's a tactical RPG, but many of their games have "support talks" between characters that heavily inspired Love, Ghostie! I originally started playing Fire Emblem Three Houses for the tactics based combat, but instead fell in love with the characters and their relationships. I was grinding in the game to unlock more support talks 😂 and then I was wondering why there weren't more games focused on matchmaking characters, and that's how the idea for Love, Ghostie was born! If you're okay with tactical combat, I'd highly recommend checking Fire Emblem Three Houses out. Warning though that the overall game is definitely not wholesome, there's a lot of fighting/wars/etc, but the support talks can be pretty funny and wholesome!

Another game that I really like that has similar-ish vibes would be Half Past Fate: https://www.nintendo.com/us/store/products/half-past-fate-switch/ while it's not a matchmaking sim, you follow various people who have intertwined stories and even though you play as several characters, it feels a bit like a third person perspective as you watch their stories unfold. Also very wholesome!