I av always asked my self the same question, becos at times I look at some couples who are not really enjoying the marriage, at least they were in love before they got married, so that usually makes me feel its not only if u love the person that u can know the person is the right person, but really, what I think is that one shud be very prayerful when choosing a partner
I believe one of the ways to know if the person one is married to is the right person is if one can really say that person is a friend, someone that u always av something to talk about, someone that whenever he/she annoys u, freely in ur mind, u forgive the person, someone who puts a smile on ones face, most especially someone who olny thinks about ur future and progress

If you are happy
If he/she is happy
Then, i think you meant for each other.
But if you marry the wrong person, i will like to know the solution, even when kids are involved.

There is no perfect man or woman.Therfore, there would never be a perfect relatnshp. What matters is spirit of sincere luv and forgivnes and a strong determination to stay in luv.

Through the personalities that attracted you to her in the first place.

If someone has to ask "how do I know if I married the right person?" it's a bit late, as the saying goes, to close the stable doors after the horse has bolted!

If someone gets married because of pressure from family and friends they are creating a rod for their own back.  In fact, it's a stupid reason for getting married _{(there, I said it)}.

When both of you, as partners, are able to successfully run the 'business' of marriage together.

imo, compatibility. when both of your are compatible you both will at least be able to work through the journey of marriage

make sure u pray v hard b4 u go into it

Marriage means different things to different people,as much as I agree that no perfect marriage .marriage should not bring more sorrow than happiness. Because it is of God,satan will always seek to influence all marriages. Nothing stop couples to pray everyday about their relationship. God is our guide.