Why Won't These Villagers Breed [duplicate]

I recently figured out that you an create villages with lots of doors. I decided I would try this for myself and made a creative world and built this structure: enter image description here

I realized that there weren't any villages nearby so I spawned two in. Then my problem was that only one of the villagers would have the heart particles above it and they wouldn't breed. So, what am I doing wrong?


Solution 1:

If one of them has the heart particles, you've done everything correctly. Give them more time and they'll breed.