why do people fall in love with a wrong person??

I believe that when a person fall in love with someone she/he cannot be sure totally to be knowing that person entirely so this is where the problem rises when she/he comes to know that the person she/he thought is the right one infact turns to be an illusion. So if someone would know right from the beginning that the person is not the one suitable for her/him then the choice can be decline. So knowledge about the person is very essential to me.

The main reason can be it is not love but only physical attraction, where we are attracted to the person and wants to be with him/her all the time. True love does not go for looks, but if you are comfortable with the other person when you are with them, you care for them all the time, know their feelings and understands them is the true love. Because if you are loving the other person you will never hurt them and always be with them no matter whatever is the situation. But now a days true love is very rare, and we just take the decision based on the attraction which leads to breakup or divorce after some time.

I think nowadays, young people are jumping into the relationship dating game too fast without taking precautions as to whether or not the other person is right for them. People are too passionate sometimes and that's totally fine in a relationship but they should consider that once the passion leaves, is there something more? Or was it just a passionate fling and passing thing? People still cling to past emotions that they believe was love, so when it should have ended a relationship, some people can't let go, this results in believing they found the right person but in reality they aren't the right partner for them. And of course, we all know the saying how "opposites attract", which works but like I said before, is there more once the passion wears off?