Should I believe my friend?

It's simple; your boyfriend cheated on you, and lied about it. Now you have to decide on whether you really want to stay with him, or break up and move on.

Girl I say they both were planning it!
but the thing is that your friend didn't hide it so you can know about it and fight with your guy.
that's my version

I gives a rip-roaring-fart if she was sleeping naked on the couch with her ass in the air! DON'T TOUCH THE WOMEN! Especially if it was not a clear and consented invitation. It is her place and what a person does in their place is their own business as long as it is not illegal. This stuff is grounds for sexual assault charges at best.

Bad. Bad. Bad. Bad.

Now I personally have seen a scenario like this where the friend actually lied about it because she wanted someone else's man. The results was shocking: the boyfriend got dumped and the lying woman picked him up later. A rare and stupid situation that one way, real soap opera type drama.

$%#@! I HATE THIS CRAP! Makes us men look like a bunch of jackasses

This is a toughy. . It's hard to say which version is correct. Maybe there is some embellishment on each end.
But, the fact is he didn't have to do what he did. And if he is a faithful boyfriend, he would have made sure that it didn't happen, whether it was initially an accident or not.

As far as him saying that he fell like that, it sounds fishy. But I suppose it's possible. But it's convenient for him to say that, because there are no other witnesses. You will probably never really know. But you do need to know if he is faithful. If I were the girlfriend in this situation, in about two week's time, after he's forgotten about this, I'd set a little trap for him and see if he takes the bate. I'd put him in a situation where he is with a really attractive girl who comes onto him, and see how he reacts.

Let me get something straight. Your boyfriend stops by, nobody is home, but your friend is home sleeping with her legs wide open on the couch and not in her room. Then suddenly there is a phone call, he hands the phone to her, and he fell on her and started touching her, and gave her oral sex? Is that what happened? Or what your boyfriend claims that happened?
But your friend's version is that she was sleeping, and she woke up to your boyfriend giving her oral sex-----is that right?
What is there to think? You already said your boyfriend lied at first, so why is he not going to lie a 2nd time or a third time? Also, your friend didn't have to tell you what happened. I mean, she could have kept her mouth shut, and you would have never known it, cause I'm sure your boyfriend would have never mentioned it. So again, what does your friend have to gain, except maybe she likes your boyfriend so much she wants you to break up with him so she could have him?

In all honesty, if I were in your shoes, I would believe your friend's story. You ask, why wasn't she sleeping in her room, and why was she sleeping in the couch; well, maybe she just passed out there; it happens, and maybe she knew nobody would be home for a while so she thought it was ok to pass out there.

What I do see is that in the minimum, your boyfriend is a liar, and in the worst, he is a rapist.

I would have a hard time believing either one 100%. Ditch the guy, no one needs someone who cheats on them and lies to them. Watch your "friend" closely. If I woke to someone going down on me He'd be covered with the evidence ( black eye split lip something...) at the very least some marks to say this was unwanted attention. I would venture a guess if he is not packing marks that it was a consensual event and your friend is just trying to get out of shit and salvage a friendship. Watch her closely if she has done it with one BF what's to stop her from doing it again.