Girls and guys i need some advice please?

my boyfriend is turning 21 soon, weve been together for three amazing years, we have a beautiful son so i dont want you guys thinking im a skank. im not that freaky of a girl so id like to spice it up a little and do this one thing for him. what music should i dance to? what moves? what should i wear? how can i really make him like this. girls and guys give me some advice from past experiances that would be wonderful. thank you!