To love Jesus is to desire his presence, guidance, mercy, grace, truth, love, favor, and blessing above all things. It means that I recognize that Jesus and all he is and all he wants from me is my highest good. It means I deeply need and joyfully acknowledge his love for me, a lost and condemned sinner apart from his mercy and salvation.
"Do you love me?" Jesus asks. Yes. Not as fully as I ought. Not perfectly. But I do love you more than... (How will you fill in that blank?)