1. He is a frank person.
You don't need to worry about where he goes or who he's with, because he'll always tell you in advance so you won't worry. And because of his frankness, you understand his thoughts and actions very well.
2. He introduces you to someone he cares about.
If he takes you seriously, he will be eager to introduce you to his family, friends, and colleagues. This kind of behavior often makes a woman feel respected and secure.
3. He is willing to spend time with you.
This shows that you hold an unparalleled place in his heart. If he is a very busy person, it's even more commendable that he would do this.
4. He knows how to listen.
He respects your opinions and listens to your views, instead of making decisions unilaterally in a chauvinistic manner. Involving you in his decisions shows how important you are to him.
5. He wants to know more about you.
Love is built on mutual understanding. If he's serious about you, he'll definitely be curious. Besides understanding your personality and interests, he'll also want to know more about your career plans and future aspirations.