I give her oral sex why don't she?

If you want your girl to get into this then I think you need to take a few things into consideration.
1) make sure your toolage is clean and smelling nice.
2) pay attention to under the foreskin area, ( if you have f/skin) sometimes that can get slightly "cheesy" and that's so off putting.
3) don't push her head onto it, let her decide the pace...
4) don't force yourself into her mouth before she's ready, it'll make her gag not a nice feeling.
5) Also don't forget her ears aren't handles.!

Always say Thank You, girls/ ladies like men /boys with manners....

Dont criticise her attempts, encourage, by showing pleasure.

If you just sit down with her and ask her if she likes giving oral sex. Do you guys talk openly about it? It is always good to do so if not. As mentioned above, make sure you are good and clean.

You need to talk about it, and find out whether or not she ever intends to give you oral sex. If not, she's a prude, and you should move on, because it'll just get worse with time. If she is open minded, give her time, but, at some point, it may become obvious that she is just leading you on, and has no intentions of trying. Again, if that is the case, move on.

You are young. A sexual relationship is something that grows with time as you become more comfortable with each other and the things that you do to give each other pleasure.

Talk to her about it but be understanding and patient and let her go at a pace she is comfortable with. She may just need time and encouragement from you to become more proficient at it. She may get to enjoy it more as time goes on.
But there are many women who do not enjoy anything about it and will not do it at all.
If this is the case it is not a reason to end a relationship or make yourself miserable over. Do what is pleasurable for both of you. Things can always change.

Don't be forceful about it, encourage her and let her know how good it makes you feel and how much you would like her to ....(fill in the blank) take it a step or two at a time , don't expect it to happen all at once. Anticipation can be better than the act itself sometimes.

Patient understanding communication can overcome monumental problems and help build a great sexual and loving relationship.

Refusal to give oral sex does not make a woman a prude. There are men who won't do it, it does not make them a prude, either. It is a matter of preference and choice.

I do it, with enthusiasm and love for my partner. A woman who wouldn't return the favor for me would be incompatible, and I'd end the relationship as soon as I found out.

That is your choice and prerogative. But not every couple engages in oral sex and they have satisfying sex lives.
It is a matter of personal choice.
What is true for you is not true for every couple. Not every man uses that as a criteria for a relationship.

I agree with you. It is each person's choice. It is also each person's choice as to who they decide is compatible with them. Some people will only date professionals who make a lot of money. Not my type...

Don't be disappointed she is prob too inexperienced to know what to do and she may not want to tell you. Ask and guide her lovingly, you'll get better results. If she resist ask what her what she objects to and do what you can to make her comfy. Start slowly and gradually don't expect perfection at first and don't demand best way to turn a woman off..

She prob does not have enough experience to know what to do so, don't get upset. She is not doing it on purpose.