I can't tell you for sure what you should do. But I can tell you for sure what not to do. Don't get married. It won't make things better. If you feel like this now, having the weight of social conventions, personal values, and religious convictions on top of everything else you're dealing with will make things significantly worse.
I imagine that, when he asks you "who do you love?" etc, you can't offer anything but an enthusiastic positive response without him probing further to find out why. My partner is the same way. For her, it is a manifestation of her insecurity. I find I have to throw her a proverbial bone lest we argue about it for the next five hours. But throwing that bone just perpetuates in her mind that everything is okay and functional when it is not. It's a tough situation. But, sooner or later, you are going to have to tell this guy the honest truth and be prepared to stand up for yourself. You don't have to be argumentative about it; in fact, you should try your best not to be. Just be matter of fact. Tell him how his behavior makes you feel and why you would rather not be put on the spot. If he can't come to terms with his need to respect your needs, then you'll at least know you tried to communicate with him. While your at it, ask him why he does that. Why does he have to constantly hound you for a manufactured affirmation? Does that really make him feel better? Wouldn't he rather hear you say you loved him naturally, without prompting? See what he thinks.
