When steal your girlfriend.
''Wow Hotaru you must really love Fujiwara''
I call 100% bullshit on this. What happens in the manga right now is just a way to create cheap drama. Hotaru suddenly being the evil mastermind is bullshit. You can also see that she is clearly shocked when she realizes the picture is leaked. She just acts like the bad guy so Yuma looks like the lone victim here.
Acts like an asshole to both girls 100% of the time. Pushes both of them around. Blackmails them with >>160920593 this picture and in the end even puplishes it so the whole class/school sees it.