Wotaku ni Koi wa Muzukashii, Around 30 dakedo, Hatsukoi desu. Recommendations
Both series revolve around a few core couples' woes on relationships in a comedy/slice of life manga setting. WotaKoi's struggles revolve around the couples being otakus while Around 30's struggles revolve around the couples being "old." There are a lot of similarities between the two but both are different enough for me to recommend one if you like the other!