Love is not building a relationship on a foundation of physical looks.
Love is having respect, trust, and empathy, whether it be romantic or brotherly love.
To have a healthy relationship is to make their safety as much as a priority as yours.
Couples in healthy relaionships give each other time to heal and mend themselves instead of giving up on each other when times get tough.
As the Bible says; "Love is patient, love is kind."