Best friend wants to see your dick!!!

"W-well.. You know I always thought you looked kinda cute.." "I mean.. I guess it wouldn't be cheating if you just..showed me your cock." Right..? I saw it anyway, like way back, anyway. It's not a big deal! That is how it starts. But as soon as you pull it out, I can't help but to join in on the fun. I guess it's fair if I show you my tits back. I don't want to admit my pussy is getting soaking wet as I'm staring at your dick. I really want it in me.. But we can't do that! You have a girlfriend, and my boyfriend would definitely not appreciate it, either.. But what if we just watch each other play? There's no harm in that! ..right?