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Straight guys streaming to an audience of men are a niche of their own, and plenty of viewers come for exactly that.
Hetero on paper, on camera for you
Cam4 is the big source: when its men pick an orientation, straight is the most common answer, ahead of bi and gay. Stripchat tags straight, BongaCams has a straight section, LiveJasmin lists straight among its gay categories, CamSoda tags straight, and Chaturbate guys write straight or str8. We gather all six into one grid, one card per guy. Many keep it solo and teasing; some will go further on a tip goal or in private. Read the room subject before you ask — the line each guy draws is usually written there.
The ones who admit to being curious move over to bisexual guy cams; for the size factor go to big dick cams. Everything else on air: live gay cams.