What is wrong with me

Let me start out by saying that I am a virgin and so is my bf. We're waiting for marriage for sex. We have been together almost 3 years and I love him to death and am attracted to him we do make out though and I give him handjobs ext. But he doesn't do anything to me except play with my boobs. Anyways in the begging all this was new and exciting but now I'm just bored with it. I don't even have the want for sex? Why is this? I don't like feeling this way. I liked to want to have sex with him (even though were waiting) it was exciting. But now the making out and him kissing my neck and playing with my boobs is just blah. Is this cause that's all it's been for 3 years now and I'm bored with it? I don't know.