That's quite a question. Do you mean loves or loves loves?
If you mean loves you as in cares about you and your future, and genuinely likes who you are as a person, then he or she might show concern for you, even maybe by trying to steer you in the right direction, or treat you with kindness in general.
If you mean loves you romantically . . . Any expression of romantic interest by a teacher towards a student pretty much guarantees he or she doesn't love you. It isn't loving to hit on a student. Unfortunately, that is counter intuitive to many students.
If you mean loves you as in cares about you and your future, and genuinely likes who you are as a person, then he or she might show concern for you, even maybe by trying to steer you in the right direction, or treat you with kindness in general.
If you mean loves you romantically . . . Any expression of romantic interest by a teacher towards a student pretty much guarantees he or she doesn't love you. It isn't loving to hit on a student. Unfortunately, that is counter intuitive to many students.