mm: Love is a feeling.
Q: Agree.
mm: As such love, like any other feelings, requires an on state and an off state in order for you to feel love. You cannot feel love all the time. If you do, you need to have MORE love to feel love, or less love to feel what you had was love. That's how feeling works. That's how our other five senses work also.
The person who asked me this question really wanted to know how "she" can forget her "boy-friend". But, really, there is no magic here. You cannot just have the good without the bad (or vice versa). Life (feeling) just doesn't work that way.
The only "advice" I could offer was: this too shall pass.
But I am really not here to give advice. I am here to BS.