There is an irresistable attraction
and an atmosphere of love and passion. Both feel the other person
is their "type", and each tends to get a real ego boost and energy buzz from their partner.
His desire to make her happy is a definite benefit to her abilities and talents. He holds pride in her accomplishments, willing to do almost anything to help her climb the social ladder. He can lift her up with his enthusiasm and build up her self-confidence at times she doesn't feel so strong.
He is not a judgmental type, but she can clearly see his various inadequacies and failures. She knows what should be done of his behalf to be more successful and mature, and in time it might develop into the ritual of sarcastic and critical conversations. But there is certainly an initial attraction escalated by the feel of safety and protection when she is around.
Friendship, Freedom, Inspiration
Where did he go? His electric personality and unusual twists in relationship strike. It reflects the time of their first date when she was looking for something new, fresh and inspirational. There was something unusual, different about his entire "act". He might be her best friend, but it is tough to let him be free.
He is the part of her learning curve in life. It might be not easy to handle, but she definitely needs it.