I think it's important to listen to her if she isn't ready for all sexual acts. By quoting it "hurts" it shows me that you may be pressuring her into things she's not ready for. First and foremost, it's more important that you discuss your sexual boundaries and ALWAYS use protection. If you can tell she is uncomfortable or saying "no" then stop. If it helps, make a safeword, like "red" to indicate when someone would like to stop, and RESPECT it.

There is something called the Kinsey scale (Kinsey scale - Wikipedia, the free encyclopedia) that shows most people are not 100% hetro or homosexual. You can have thoughts of and occasionally get turned on by same-sex. It's fairly common and doesn't mean you're gay or bisexual if you normally don't identify with it.