How do you raise the marriage bar in sims freeplay?

To raise the marriage bar in Sims FreePlay, you need to build a strong relationship between two Sims by increasing their friendship and romance levels. Engage them in social interactions, such as chatting, flirting, and performing romantic actions like hugging or kissing. Once their relationship is sufficiently developed, you can propose marriage. Completing relationship tasks and attending special events can also help boost their connection.