You may not be his first, his last or his only. He loved before he may love again. But if he loves you now, what else matters? He's not perfect, you arent either, and the two of you may never be perfect together, but if he can make you laugh, cause you to think twice, and admit to being human and making mistakes, hold on to him and give him the most you can. He may not be thinking about you every second of the day, but he will give you a part of him that that he knows you can break, his heart. So dont hurt him, dont change him , dont analyze and dont expect more than he can give. Smile when he makes you happy, let him know when he makes you mad, and miss him when he's not there.