Getting gf to give head?

My girlfriend doesn't like sucking mah dick. I like it. I go down on her lot's, as in every second day. She has given me a total of 5 minutes dick+mouthage in almost 4 months.

WTF?

Should I just cum on her in her sleep?

I'm dead serious. I went down her twice in the past 3 days, and she told me she feels abd she doesn't do it becaus she doesn't liek to. Wtf? Should I just say 'ok'.?