Sexual frustration?

I’m a virgin and 16 which to me is perfectly fine but this past year I’ve been feeling a bit weird and started to think about sex a lot more often and I would catch my self staring at a guy or the bulge in his pants and imagine sexual things and I’m not really sure if this is normal because a lot of my friends have loss their virginity and They talk about how nice it is to have sex and I feel like I’m missing out on something big and I’m pretty sure this is what sexual frustration feels like but I don’t know how to let off this steam