I have a feeling my boyfriend doesn’t love me

I have a feeling my boyfriend doesn’t love me. I don’t know if he really doesn’t or if it’s all in my head. If he didn’t love me why would he stay? Is it just for the sex? I’m not that pretty. We don’t go out, we date even go on dates, we never went out to eat, we never went to a movie. Nothing! We’ve been together three years, yeah he buys me stuff but we never go out, I wanna get all dressed up cute in sexy dresses and heels but we don’t get out!