She should tell her father about her interest in getting married with him and have her father contact him. She must have no contact with him whatsoever and stop the classes immediately as it was haram from the beginning to start such classes.

Please advise a 21yr sister who is having gradual feelings/attraction (she does not know his appearance) towards her Hifdh ustadh because of Allah’s blessings on Him & good qualitys of his knowledge,Deen/Virtue & manners. Should she stop taking classes? She believes he will make a good spouse. How should she initiate the contact between her wali and him. Is this indecency/wis was to obstruct hifz?