Can a guy who u dated for a year be still infatuated or to be with you that long can it must be love?

People stay together for a myriad of reasons and it's not always love. He just may be comfortable with you or he may really in fact love you. The time you have spent together is kinda irrelevant. After a year you would hope that he's with you because he really loves you, but the only way you will truly know is in how he acts and how he treats you.