All perfect praise be to Allah, The Lord of the Worlds. I testify that there is none worthy of worship except Allah, and that Muhammad is His slave and Messenger.
We have already stated that it is permissible to use Emojis in the following Fataawa: 46246, 140498.
We did not find any statements from the scholars about using them between the two opposite genders. However, we have warned women from using these images in a way which can lead to corruption; please refer to the following Fataawa: 249706, 21582.
Allah knows best.