Ok...I'm having crush problems..

Say yes, tell him to bring a friend. Tell your mom that you guys are going as friends, bring a friend. PROBLEM SOLVED! Oh and you can ask the guy to bring (Example) Johnny. Bring (example) Kayla because Kayla likes Johnny.Then you guys have a double-date

I suggest that you discuss it with your mom in a friendly, open manner and you can come to some sort of a compromise.
If you're open with your mom and you listen to your mom, I'm certain that she'll be open with you and listen to you in return.
You can make a proper, well-balanced decision from there.
And I'm sure that your friend won't be much different. My best friend Jessica is dating my old elementary school nemesis and I couldn't have stopped her. That's what friends do.

Say yes, and tell your mom you're going out, as friends.

I've learned from experience that it's never a good idea to disobey your mother or father. But if you really feel you should, and if you really want to, go ahead.

Just be prepared for your mom's reaction if she ever finds out.

Just say yes.... don't give a banche if ur mom don't care.... don't tell her if u don't want to get in truble thats wat I did with my bf.

Just say yes nd dont tell ur mom like I did when I was In elementary school

I can't help you with your problem about your mom. But as for your best friend, it's possible that she (he?) just doesn't want you to get hurt. Or maybe she (he?) is even jealous. Once, I claimed that I didn't like the guy that my best friend liked. I told her that he was a bad influence. And yet, I got over it and was happy for them, because they were happy. So if your crush makes you happy, and if she (he?) is a real friend, you shouldn't really have to worry.

Say yes.

what grade are you in ??I think if you are on junior high school, maybe you should say yes... But probably think about the good and the bad things that could happen if you say yes... Age is a problem too.... If you still young, forget about going out... We're still young.. Many things to focus on, school... But you may also think about the good and the bad things that could happen if u say no

How about asking your mom about it in advance? If she's reluctant, try to persuade her. Better to demoleculize the alien zombie while it's still in the cocoon... (It's a metaphor. Like "nip it while it's still in the bud.")