Only cum through oral?

So, my husband and I have amazing sex, but it seems like I can only cum when he eats me out. Sometimes he eats me to the brink and then I cum when he's in me, but I still need him to do oral to get to that point. Am I alone? Is this weird? I love having sex with him ALL the time even if I don't cum, but he always wants to make me cum. Which is great, but I feel bad having to have him eat me every time, even though he loves it! 😂