Loyalty test goes wrong sorry Sandra but you are too prude

My friend and her guy were invited to me for coffee today, but when he wasn’t there yet, she had an unusual request. I should test her boyfriend’s loyalty because she suspects he’s fucking strangers. I wasn’t so sure whether I should do that but I’ll do anything for my friends. Of course I shouldn’t get rid of him completely. Should actually stop this! under some pretext she left the house again when he came! Well, what can I say now? One thing led to another. It didn’t take me long to get him around. Unfortunately I got extremely horny because of it and couldn’t stop the whole experiment and let him fuck me bare, oh my god, that was just so hot but I don’t know if she finds out, our friendship will be over. What do you think if I went too far?