If you just use your mouth...it's not cheating, right? Woman's mouth lies... Cuckold story that starts from mouth Blowjob NTR

I and Tsumugi were dating since they were in college and are now living together with the assumption that they are getting married. She's cute, kind and I'd be happiest if I could get married. ...Unbefore she knew it... and by that guy! With my best friend Tsukasa! I can't believe it's going to happen that way... I thought that things like "cheating" and "NTR" that I often see on the internet these days have nothing to do with me... It's frustrating to be frustrated, but for some reason, it's a story of a erect cuckold that starts with a blowjob that makes you excited.