Fucking pissed right now

Abby • Hi guys im abby and i just got this app. My bf told me i should get it because it tracks your period.
So my sisters fucking scumbag boyfriend Steven is messaging my boyfriend saying I'm fucking Stevens brother and sucking his dick while my boyfriend is gone. I'm just so fucking pissed Cuz I would never do that to my boyfriend I Do not believe in cheating. Steven is doing this Cuz he wants my boyfriend to break up with me