I got cucked by a discord boyfriend

>Be me
>Meet this christian girl
>She's a Loser-Stacylite for reference, no friends, otaku. (I know, shocking)
>She got this discord boyfriend from spain or whatever
>The guys handsome but a fucking loser
>She tells me that she's thinking of breaking up with him because she just doesn't 'feel' it anymore.
>She breaks up with him
>Timeskip 1 month
>We are fucking
>Start dating
>We last only month and a half and she breaks up with me arguing that her mother doesnt let her and we cant be together because shes christian and Im not
>Find out she came back with the discord boyfriend
>One day, big argument
>You never loved me blah blah blah, the usual shit a heartbroken man says
>We stopped talking
>She came back to apologize
>I manipulated her into having sex again, we do this shit for 2 whole months, shes still with her Discord boyfriend.
>She has him as her profile picture of Whatsapp (Messages app)
> ''You looked so fucking hot today''... while having the picture of her boyfriend
>I tell her to break up with him
>She says shes going to
>One day she just tells me she wants to be alone
>She told me this 7 months ago and she's still with him. She deleted all her accounts along with the guy
>mfw

Anyways, I have the evidence of all her cheating of months. I need some way to contact the guy but I don't have it. any options? I know the guys full name and a two usernames he used on tiktok and ig, but thats about it