What is love...? Wow, you could write and essay on thi topic.
Alhamdulillah Allah has blessed us with big hearts, and we all feel some kind of love/affection/emotion every day.
There are many different kinds of love.I mean for example, the love I feel for my daughter, my hsband and my mum are 3 completely different kinds of love. I would go as far as to say we cannot necessarily catagorise them, having said that, we can attribute certain factors to each kind of love.
Daughter - I cry when she learns something new. I feel immense emotion when she hugs me or says "mummy, i love you!".
Mum - I respect my mum. I value her guidance(to a point as she;s non muslim) he carring attitude towards me. Her support.
Husband - hmmmm, when I wake up and know that he is there for me. when he spends time with his child. he makes dinner for me. He protects me, he cares for me. I respect him. the deep friendship and trust we hold together.
One thing I realised while writing this is that I feel I cannot live without any of them. Whilst I know when Allah brings their time close I will have to deal with any loss, I still feel at this moment it will be unbearable. I don;t think this is a cause of love, but it is defniitely a consequence of loving someone deeply.
Whatever kind of love you are interested in, I feel this is the binding factor.
Based on this anyone could be subject to our love but it is with Allah;s guidance and through His will that people are chosen for us to love. I mean there are people who don't love their parents and parents who dont love their kids. and "usually" the feeling is mutual