Moq, there is absolutely a variety of feelings. But in general, its hard to love someone you’ve known for 2-3 months. Knowing your fiancee for longer (usually 9-12 months) means you are generally more likely to already love your spouse, not just like and admire them.
I don’t think I’ve ever heard a MO person say “I’ll grow to love him” but I have heard quite a few Yeshivish people say it. Note the “in general” – its not an ironclad rule.