Yeah I think you should break up the wedding for the following reason

1) " tell Frank i seaid hello" personally thats not a best friend and I'm a guy and i would personaly put him through a wall.

2) what you did was wrong and its equally your fault , you did it because you liked his "best friend" aswell and wanted to do it before you wed as you feel your tied into the marriage.

3( what would your future child think of you.

I have been in the position of this" best friend" when his girlfirend tried it with me. I just sent him the text she was sending.

your wrong , just tell him the truth he will hate you but respect you for not treating him like he is stupid. and he can move forward with his lfe. nstead of thinking about your feeling think how would you feel if the tables were turned

Sounds like a typical red neck family 

Face it it's over what you did to your fiancé over an argument and with his best friend is just so wrong of you. In the end you'll both suffer and it's all going to go to shit from there 

You're screwed, blued, and tatooed.  Bobby is supposed to be Frank's best friend, which means he's always going to be around if you and Frank happen to get married.  And you will NEVER be able to establish a loving relationship with Frank with Bobby hanging over your head.  It's going to come out, and when it does it's going to be ugly.  The later it happens, the uglier it's going to be.  You best bet is to tell Frank now and minimize the fireworks.  If  you don't want to come clean, break up with Frank.  Give him whatever excuse you want and let him move on with his life.  

Yea, you should tell him he deserves a million times better than someone like you, you messed up

big time and he's never going to let you forget it so when Bobbys feeling horny & wants some he'll be calling you to give it too him and if you don't he'll threaten to tell your fiancé & he doesn't deserve to be treated the way you have but that's the problem with your kind you get in an argument and jump straight into bed with someone else rather than working it out you make me feel physically sick 

First of all :

• you're a slut
• you shouldn't be ashamed of what you've done, you deserve to be sexually satisfied
• franck is the only one to blame, he engaged you
• bobby is a bitch
• you always wanted to fuck bobby and you obviously already flirt with him by the past
• you waited to have an argument w/ franck to have an excuse to cheat on him
• you wrote "sucked him dry" meaning you're very proud of it and you really enjoyed it, you should do it again
• 2 hours later you let bobby fucked you, in your head it was like your first time, bobby is your new lover
• instead of being ashamed of wht you've done you let bobby fucked you again, franck don't exist anymore
• franck called you, you missed his call, told bobby you love him and let him fuck you a third time, you have absolutely no respect for franck, leave him
• say hello to franck for me, bobby don't respect franck either, bobby is a whore as you are, he will get you in trouble, leave franck before bobby blackmail you and don't fall in love w/ him
• if franck cry instead of getting really mad, he's a pussy
• franck must beat bobby and you should'nt care cause that's all what bobby deserves
• no man should trust relationships, women's are men kryptonite, it will teach franck a lesson about life
• TELL FRANCK THE WHOLE TRUTH THATS THE ONLY THING TO DO

From one woman to another, You're simply a 2 bit scrubba. What a disgraceful way to treat your Fiance. Seriously! You should tell him immediately but then again i hope you do get married with Fiance and in time when you are settled he comes home with a Girlfriend. 

The ultimate slut.  I hope your fiance finds out and dump you during the wedding. I hope he tells everyone there of what you did with his best friend.  Then he goes on the honeymoon with one of your friends.  I really hope he does that to you.

I know a Frank and Bobby, and Frank was engaged.  I'll have to tell Frank if Bobby has been driving his fiance around.   I'll need to tell him what you said here to see if that's been happening to him.  I hope it is and he dumps you.  You deserve it.

Some women are just plain stupid. The word love should never come out of your mouth. You have betrayed a guy with another guy who, by his apparent nature, is going to humiliate him behind his back. This guy needs a red hot poker shoved up his ass and his balls cut off with a rusty saw. What a scumbag.  And you are a whore of the first degree. I hope Frank finds out and you lose.

Good for you don't admit anything. You fine he will never tell his friend as long as your putting out