He poked my breast

We were sitting together and he was explaining something to me and suddenly he moved his hand and it poked my breast. I just chose to ignore it because I thought it was an accident.

But then once I was tying my hair so my hands were up and I caught him staring at my chest. And when I wear V neck shirts (not too deep, just regular stuff), he's always taking glances at that area. So I am starting to think that what he did with his hand was intentional.

He's a nice guy otherwise, very helpful, kind and funny but is he a pervert?

Like to add that, he's never had a girlfriend before and is 18 years old.
He poked my breast
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