So, I gotta tell you, naya: I was reading along, and I got to this:
I've kinda led him to believe that sex feels great for me so I can't go in reverse and say hey I was making it up.
...and I scared my dogs with how loudly I said,
"Ohhhhhh NONONONONONONOOOOOOOOOO." (They're okay now, and they got some biscuit-bribery, no less.)
So, before anything else, here's the scoop: the hell you can't.

Seriously, if you have been dishonest about what you like with a partner you actually want to develop a relationship of any quality with? Not only CAN you tell them you were not honest, you should. Because one of the biggest things that makes people have sucky sexual relationships, and get stuck with partners with things they don't like, is this dishonesty, and the idea that, with someone you know you are safe with and can trust, you can't turn things back around and be honest.
And know what else? This is going to be something that for sure is going to make you feel obligated to have that kind of sex, even when it's not what you like or want, and that is bad juju, my friend.
So, I would strongly encourage you to come clean. You can say something like, "I have to tell you, I gave you the idea I love intercourse, but I really don't. So far, it just really isn't my thing, but I felt really insecure about that, and worried you wouldn't like me or want to stay with me if I didn't like it (or whatever your reasons were, if not those), so I wasn't honest. I'm so sorry about that, but I want us to be able to be real with each other, and have a relationship based on honesty that's really likely to be great for both of us sexually, so I wanted to come clean about that and make an agreement with you now about both of us not hiding things like that from each other."
On top of everything else going on here, it seems clear you and your partner need to be doing more honest communication with each other around this. If someone's feelings are hurt because you don't like or want something they do, that is their issue to take care of, and their place they need to grow, not something for you to protect them from, or keep them from growing with, especially since that whole setup is a lousy one for healthy, happy sexual relationships. Our intimate relationships are supposed to help us grow, not keep us stuck.
If and when you are with someone who truly can't handle a sexual partner not being sexual when they themselves want to be, or not wanting to do something they want? Then that person clearly is just not ready to be sexual with other people, so being sexual with them is a bad idea. But more times than not, when people have the idea a partner couldn't possibly handle the truth, they're wrong, and really underestimating their partner (and let's be real, being pretty patronizing), treating them kind of more like a child than a partner. Since I assume you want a partner, not a kid to parent, I'd encourage you to treat your partners like partners, and let them decide for themselves what they can and can't handle. If it turns out you ever get one who tells you they really can't deal with that, then you both will then simply part ways as sexual partners until or unless they ARE actually ready for sex with someone else, which absolutely includes being able to deal with a partner saying no or "not now" sometimes and not liking the same things you do sexually.
I have to head out, so I'm afraid I can't dig into much else with you right now. I'll be back on Sunday. But I think it also might be good for you to read through all of this again, and a couple links besides that one I already gave you, and just really think and feel all this through. Because really, I'm not seeing anything here -- just like I didn't with your previous posts -- that suggests you or your body are broken. But I *am* seeing some things you're doing, and ways you're thinking about some of this, that not only have likely played a big part in it being such a struggle for you over the years to even just start to enjoy yourself with some sexual activities, but which -- if you stay this way with them -- will all but assure that your sexual life and relationships are never all that great, or very good for long.
The good news with that is that these are things you have the control to change -- things like being honest and real, only doing what you really like and that you AND a partner find feel good for you both, changing up how you think about sex and sexuality so your frameworks are more realistic and sound -- and even first steps with those changes are likely to leave you feeling a whole lot better fast, and get you much further down the road to a sexual life you feel great about than not making those changes will.
I know it's sometimes scary at first to be really honest -- with yourself, with partners -- about sex, what we like, what we don't, what we really want and what we may only want because we think we have to or are supposed to, but I guarantee you that is is worthwhile and earnestly liberating. You say you have a hard time just letting go. By all means, that's a lot harder to do if you're trying to make sure to keep your story straight and give someone the idea that your experiences with sex or them are very different than they really are. Dishonesty is always going to make us feel far less able to let go, because we really can't let go much if we are not willing to be honest and real.
In the event you do not feel
safe being honest with this person, and strongly feel they simply will not allow for you to be honest about yourself and your sexual wants and not-wants and your real experiences with this or any other sexual activity with them? Then by all means, maybe you can't be. But if that's how this is, then it isn't safe or sound to keep being sexual with them, period.
Here are those links for you:
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With Pleasure: A View of Whole Sexual Anatomy for Every Body
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Yes, No, Maybe So: A Sexual Inventory Stocklist
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Be a Blabbermouth! The Whats, Whys and Hows of Talking About Sex With a Partner
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http://www.scarleteen.com/article/gende ... fectionism