How do I feel lust?

This may sound weird, but my boyfriend and I are totally in love. I love being with him, he makes me happy, I make him happy. We cuddle, snuggle, kiss and hug. BUT we haven’t had s*x yet. We have a great relationship, but how do I bring lust into it? I don’t feel that I’m ready to do it with him yet, but I don’t think I feel any lust for him. I don’t know if I want him in that way, for whatever reason. What should I do? I feel confused, and it’s obviously hurting the relationship b/c my boyfriend wants to do it, but I don’t..but then he also feels bad for constantly asking me about it. I think I still feel uncomfortable being intimate with him, I know I’m not doing anything bad but I feel awkward (we’ve been going out for 1 year and 3 months, you think I’d be comfortable already!). What could I do to feel not so awkward? How do I feel lust for my boyfriend?? A relationship definitely has to have love, but it also needs lust.