If this person whom you have been in love with has happenned after 2015, then my best advise is to forgive and forget her. You should express your feelings and what you think to her after April 2023 and if reciprocates then it is good for you.
But if she has moved on in life and found a suitable partner for her. You should stop pursuing her, you will surely find another romantic association after April 2023 and before March 2024.
This isn't the person whom you should be taking far away into your life.
Hope this clarifies your query.
Ketu Dasha brings new associations from past lives and their purpose is limited to gain or lose in life for the long term.
Native is entering Venus Dasha with Jupiter transit conjoining after April 2023 with natal venus which is lord of 5th house with jupiter natural lord of 7th house in horoscope. Saturn transit in aquarius which is 4th from Moon will bring a heart change for the positive.