Love is blind.

Strong romantic feeling can make a person overlook faults, warning signs, or practical objections in someone they love. Affection may alter judgment, causing imperfections that others readily notice to seem unimportant or invisible.

The saying can also express sympathy for this tendency rather than simple criticism. It recognizes that emotional attachment often resists detached evaluation, especially when someone is deeply invested in a relationship.

Used when love seems to prevent someone from seeing a partner's shortcomings or an obvious problem in a relationship. It may be said lightly, ruefully, or as a caution, but can sound dismissive if used to belittle someone's feelings or relationship.