I think that it signifies that he really does care about you and loves you. As you said, he knows you very well and I think it is wonderful that you have him since your last bf was a total butt-face from what you say.
I think it is good that he only wants you to do what you are comfortable with. And like Jennifer said, if he wanted to cheat on you before he would have already. I would trust him.
I hope that you two lovebirds are very happy with each other and continue to have an AMAZING realationship. : )) toodles and good luck!!