These are the types of things that should never be expected to change. They very well may, and hey, if they do, that's awesome! But don't expect somebody with a low sex-drive to magically be into it every time you want to do something. Even if you're amazing at sex, she won't be into it all the time, and if you find you're into it wayy more than she is, that could pose a problem. And to be clear, the fact that she's not into it half the times that you are doesn't mean she doesn't love it, but biologically you two might just be different. You'll get better with more experience (as will she), but don't think that will automatically make her more into it. Unfortunately, some people just have a low sex-drive while others have a large sex-drive. If you're compatible it'll work out, but if you're not, you'll be able to see early on. And if you do see you're not immediately compatible, talk it out and you can see whether or not y'all might be able to work it out. It's not gonna mean she's always turned on when you are or that you're always turned on when she is, but talking will help so much. Regardless of the type of problem, be sure to talk it out, and be sure to realize that you will never be 100% correct, but she will also never be 100% correct. People don't often understand anything that's upsetting their loved ones until they're told about it, so don't expect it to change without a conversation, but understand that if you're compatible emotionally and if you talk about it, it very well may.

Long story short, never expect anything to change, but be prepared to talk to the person you love and make sure to not only get your point across, but to also listen to their points and to always come to a compromise. Nobody is (almost) ever 100% "right" in a relationship, so it should pretty much always be a compromise. Talk things out and you'll be good, but don't expect change without talking explicitly about that change.