How I understand if I love him?

You just feel it. You feel that this is the person for you. And before you can think it the words I love you leave your mouth

If you have to ask yourself that question then trust me you don't love him. Most people just know there isn't any question

It depends how long have you two been in a relationship...In the beginning you can't really love someone, you can really like him but that's not love. I think love is when you know you two are best friends and you can tell him everything and he tells you everything, and you know you don't want nobody else, only him, and that he makes you happy and you feel peace in your heart, and after you two have been through 'some things' and you're still together and happy. You just know.

There are several different love types, familial, friendly, romantic, unconditional; you might feel one or multiple of these and express them in different styles. Overall, though, ask yourself this: "Do I care about his well-being and happiness? Do I like him for who he is, not what he can do for me or what I want him to be? Am I willing to work together through difficult situations with him? Am I willing to make room for him in my life?" If you're answering yes, you probably love him.