Assalamu-alaikum,
As has been mentioned, we can not begin to compare the love we feel for our parents and siblings - to that experienced between husband and wife.
The dynamics within each relationship is so different, that its almost like comparing apples to pears - they are similiar (being fruit), yet different.
Yet this does not place one higher than the higher.
We need each type of relationship at different points in our lives, and to fulfill different emotional needs.
It is often said that we cannot replace our mothers (or fathers).....but we can always replace our spouse.
I think this a very unemotional, almost callous way of comparing the two.
Yes, we can always re-marry - but you will never be able to replace that person.......your wife/ husband is unique and special in their own way, very much as your parents are.
We should not be focussing on 'Who do I love more?', but rather: 'Am I fulfilling the rights of ALL those around me?'- including my parents, my spouse, my family, my neighbours, my employers, etc.
Hadith - Sahih Al-Bukhari 3.189, Narrated Abu Juhaifa
Salman told Abu Ad-Darda', "Your Lord has a right on you, your soul has a right on you, and your family has a right on you; so you should give the rights of all those who has a right on you."
Abu Ad-Darda' came to the Prophet and narrated the whole story. The Prophet (sallahu alaihi wasalam) said, "Salman has spoken the truth."
Remember our duties towards our parents, the kindness and patience that we should be showing them, as described in Al-Quraan:
Al-Isra 23-24:
"And your Lord has decreed that you not worship except Him, and to parents, good treatment. Whether one or both of them reach old age [while] with you, say not to them [so much as], "uff," and do not repel them but speak to them a noble word.
And lower to them the wing of humility out of mercy and say, "My Lord, have mercy upon them as they brought me up [when I was] small."
cannot be matched to any other relationship that we have.
And so too is the bond between husband and wife, incomparable to any other:
"Your wives are a garment for you, and you are a garment for them." (2:187)
The completion of one another and the protection and comfort expierenced between husband and wife, can not be expierenced in a like manner by any other 2 people.
These bonds are so unique, that to be trying to compare them/ rank them - withdraws the importance and beauty of each.
Alhamdulillah for each of these relationships that Allah has blessed us with in this dunya.
Salaam