Li-rfuas Mordechai Avinoam ben Leah bisoch she-ar cholei yisrael
When a boy loves a girl, he enjoys her laugh, the way she speaks, her idiosyncracies, even the silliest things about her. Why? Because he loves HER, everything she does and says becomes attractive. He can talk to her for hours, even though truth be told, she isn't saying anything all that interesting.
Li-havdil - when a person loves Hashem and his soul connects to the supernal light of Torah, everything about the Torah, every minor detail, becomes so exciting, interesting and riveting.
Maran HaRav ztz"l said it best - כשהנשמה מתקשרת באורה העליון של תורה, נעשים כל הפרטים הקטנים חביבים חבת נשמה, וחשק התורה מתפשט על כל
אות ואות מדקדוקי תורה ודקדוקי סופרים וכל הרחבותיהם והסתעפיותיהם