The heart eyes emoji is used when someone loves, adores, or strongly likes something. The "hearts for eyes" look makes the meaning more intense than a normal happy face.
😍
Where it fits
It is common in comments about attractive people, beautiful photos, favorite food, outfits, pets, products, music, and anything a person is excited about.
Romantic meaning
It can be romantic when sent to a partner or crush. In other contexts, it simply means strong admiration or enthusiasm.
For a gentler feeling, people may choose the smiling face with hearts emoji.