Is this wrong of me?

Yes. You're deceiving your partners. That's called 'cheating'. Or implicitly lying.
I suggest that you both forget about the fwb, and move on to someone else.
Start with a clean slate.

Ted

Yes. You're deceiving your partners. That's called 'cheating'. Or implicitly lying.
I suggest that you both forget about the fwb, and move on to someone else.
Start with a clean slate.

Ted

Do I think f*ck buddies are wrong? No.

Do I think cheating on your partner is wrong? Yes.

What to do? Dump the partners. Be single. Keep f*cking.

Well ask yourself this: If for the sake of argument, you found out right now that you are not alone, but that your boyfriend is also unfulfilled sexually with you, and therefore he has found another girl who he is also very close to in a friendship. She rocks his world in a way that you can't, and he is keeping it a secret from you.

Would you feel bad about your boyfriend having sex with another girl behind your back, or that he couldn't be fulfilled with your sex? I would be devastated.

Yes. Unless you each have a prior agreement with your significant others that it's fine to see other people, that's cheating.

There's nothing wrong with f**king around, but deceiving someone you're supposed to be in a relationship with IS. If there's something so wrong with your relationships that you can't keep your hands to yourself, why are you still with them?

EDIT: I just read that your boyfriend also has this kind of thing on the side. If you know about him, why can't he know about you? Why is it on the DL? What's the point? If he can find sexual gratification elsewhere and you KNOW about it and appear to be okay with it, why can't you do the same, with him -knowing-? Logically, he can't be upset about it because he's doing the same thing. If you DO have a prior agreement about this and it's okay to see other people, what's the problem?

it is wrong. it doesn't matter who you re doing but if you re doing them while dating someone else its called cheating. and you re kind of doing it. sorry.

yes that is wrong.
if you want to sleep with someone other than your partner you should just break up with him.