Help! Fantasies !! TMI

Ok so we've been married almost 4 years and I dont know my husbands fantasies I've asked and asked and asked and he wont tell me I'm like dude you know by telling me I'll probably do it and he's just like eh idk... like how do you not know I know all mine he even knows mine we've watched stuff in trying to guess what he likes but nothing he wont open up to me I've just had to guess at costumes and stuff in Hope's he would like it but I'm running out of ideas on how to get him excited it's like trying to seduce a brick wall 😑🤦‍♀️😂 any ideas ?????