Asking a girl out with the help of a mate

Gonna keep this short, I like a girl, but I haven't seen her for a long time (cause different classes, timetables, friendship groups) so can't do anything about my feelings for her. But a good mate is friends with her and her group and speaks with her regularly. I don't like putting my feelings out there but I feel like as a last resort I should tell my mate I like her so he can try and organise a situation where I can speak to her. Just need to know if it's a good idea. To make clear, I don't want him to ask her out on my behalf or whatever but want to be put in a situation where I can chat to her like I used to in school! Thanks.

Is there any sign she likes you?

I get the feeling you will embarrass yourself.

100% just go for it. Maybe ask your mate if he can try to mention you and see how she reacts/feels about you?

He can try to set you up to talk with each other but don't use him as the middle man to ask her out for you, that doesn't bode well.

Gonna keep this short, I like a girl, but I haven't seen her for a long time (cause different classes, timetables, friendship groups) so can't do anything about my feelings for her. But a good mate is friends with her and her group and speaks with her regularly. I don't like putting my feelings out there but I feel like as a last resort I should tell my mate I like her so he can try and organise a situation where I can speak to her. Just need to know if it's a good idea. To make clear, I don't want him to ask her out on my behalf or whatever but want to be put in a situation where I can chat to her like I used to in school! Thanks.

An alternate option would be to add her on Facebook (unless you already have her as a friend there obviously) and try and strike up a conversation there. It makes it more personal than a friend trying to stage a conversation for you, plus at least you know for sure what is being said - because you're the one saying it. Just strike things up by asking how she is "Hey, long time no see! how are you?" You could even show you remember what she is interested in by mentioning it - be that a book, film, band etc.
If you don't have her on social media - it seems like you have mutual friends so it wouldn't be strange to add her because it is likely she would've popped up in the 'people you may know' section, plus she already knows you so I doubt she's going to reject your social media request at least. At least then it also removes the idea of the friend trying to schedule a chance where you can meet and then it not going to plan - it might feel a bit less awkward for you.

If he's trustworthy, and halfway smooth, then sure, why not. Once you're committed to this course of action, make no apologies

It's typically just a bit of an embarrassment go get others involved in dating quests, particularly if it doesn't work out. Far better just to have the courage to go for it on your own somehow. If she's interested it will work out and if she's not best to find out where you stand and move on.