Girls, Recently found out something bad about my boyfriend?

I found videos on his cloud of him on Webcam chat sites hitting himself in the crotch for girls. Not like one or two videos, like lots ☹️ it seems like he's into it... I think he's using that as a way to 'get off'

I haven't confronted him about it and I don't know if I will it's so awkward but also makes me really sad and angry at him.

What should I do? What would you do? Were semi serious but not like getting married soon or anything. Is this cheating?

Girls, Recently found out something bad about my boyfriend?
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