You've already felt pleasure. You mean whether or not you can climax. Well, that's less important than getting your body ready for it. If you feel pleasure, your body should react to being more open to sex.

[She sighed and ran her fingers through her hair.]

Look, this is less about you 'getting off' than it is about getting your body ready to have him inside of you. Lube, prepping with fingers, cuddling, kissing, touching and foreplay are all part of that. Even if you can't hit your peak, if your body's at least a little human like mine is here, then you should have an easier time having sex if you're having pleasure. The more, the easier, and then Shinji doesn't have to worry.

And he probably does. Most people do. They just don't know what they are yet.