Okay ladies serious question about pleasing my man

So an old boyfriend (now ex) of mine confided in me a long time ago that he likes being completely submissive. Our relationship never worked out because i never was comfortable with being dominate. Well here its a few years later and he calls me up just before he has to go out on deployment. I know i know getting with an ex never ends well but he is just one of those guys i will probably never fully get over. Anyways before he leaves i really wanna show him a good time and what he has and will miss out on. Give him something to think about for 9 months ;). Its kinda a bit of revenge but also ill be his good luck charm photo girl while he is over seas to keep him going in the fight. They all need someone. Well he likes pain and taboo kinda stuff and being tied up. I need some ideas. He likes the idea of me using a strap on on him and walking on him with heels and tying his genitals up. I need more i ideas. He real gets off to what turns me on. So any input would help. Been researching this for a while and its hard finding anything outside the normal "top 5 taboo" every one posts. I was really hoping for a better turn out than this. Yes i know sexy cloths. Does anyone have any experience with this that could give me some pointers? I'm afraid to hurt him and i don't want to chicken out like before.