You use the term 'dating' but if you've never been intimate, what makes you think you are dating as opposed to friends?
Have you kissed intimately?
How many years? has the subject never come up?
Are you sure you're dating him? and how many years has it been?
who instigates the pecks? hand holding? phone calls? dates?
I would definitely want to know what his feelings are before pursuing other options, even if those feelings were not what I wanted to hear. If he says he really likes you and wants to be with you in a relationship, and thats what you want, then great. If he's not interested in a relationship, then it's up to you if you want to still hang out and go places together the way you have been.
There's nothing wrong with a platonic relationship between a man and a woman as long as they are both clear and aware that it is what it is. Talk to him about it, tell him you are not one to sit in judgment of him, you just want to get a handle on what the situation is between the two of you. If he's not willing to give you a definitive answer then yes, I would explore other avenues, and if you want to continue seeing him, you can do that too, but don't try to hide that you are actively dating.
I welcome your thoughts, let me know if you want to talk more.