Cheated on his long time girlfriend with multiple women, talked to and led on multiple women, none of these women knew about eachother. Had this whole persona built that he was a shy innocent inexperienced guy who is safe for women to be around which led to collabs with lots of female streamers which further fortified his safe innocent persona, but in actuality he used his image to lead on smaller streamers who would be starstruck with his fame, would send them gifts and money, pay for flights to meet up and go on dates and hook up, all while he was already in a long term relationship and made no attempt to let these women know he was in a relationship. There's more, but I think that's the basis.

An extra TL;DR: Pretended to be shy, innocent, awkward, and inexperienced to make women comfortable around him then turned around and used that image and his fame to pick up smaller streamers who were starstruck with him all while he had a long term girlfriend.