<human>: Could you distill the essence of the text into 1-3 sentences?

Not sure if this is the right sub for this question so I'll keep it short. 

My girlfriend and I have been dating for about 3 months now and we regularly have great sex. There is always a good amount of foreplay which includes me going down on her which is awesome because I really enjoy giving her oral. I can tell she likes receiving oral but I'm starting to think she doesn't like to give oral sex. 

I think this because in the 3 months we had been having sex she has never given me a blow job, and that bums me out because as much as I love giving her oral pleasure I really like receiving it too. It's not like the opportunity isn't there because it most certainly is but I guess I just never pressed the issue. I had heard once from one of her girlfriends she doesn't like it and I guess I took it with a grain of salt but now I'm starting to maybe see some truth to it. If she doesn't like it then she doesn't like it, it's not a deal breaker for me but how can I go about bringing this up to her without offending her? Thanks!
<bot>: don't think my girlfriend likes giving oral. I really like oral. How do I politely bring this up to her?