You can’t demand more to a person.
You can’t demand love, if they truly love you they will give it to you unconditionally.
You can’t demand attention, there is a bigger picture than you. He/she has a bigger world that she need to live and deal with everyday.
You can’t demand time, if they truly wants that person to be with you they will make a “time”
despite how busy they are.
So don’t focus what person can give to you but focus to the things what can you offer to them. Focus to the things what can you give even they don’t return the favor. Focus to your gift of giving because you know you’ll never be in lack because you are connected to the right source.
The best thing you can offer to a person is prayer.