GF is asking / agreeinh for sex and then Denying making it Stressful

I Really got helpful responses on my other Post thus asking again.

I am 25M Virgin. and Now I had a GF Now from this month I have a Very Much Urge to have sex, she is not denying sex but delaying it like not today or Tomorrow or we can have on next date. I respect if she needs time , but here.for some reason I don't know I am frustrated and want to have sex. I asked her if she is not ready I respect that , but let me do it with some hooker since I really need. But she says she trust me and want to be with you

Now few said to me that she don't owe me sex but she don't.let me be with someone which I can understand but what should I do it's affecting my work I am only thinking about sex all the time and Fapping is not helping.

My Problem is she builts anticipation and denies.. and when I says I'll not be expecting it soon it will happen , she says no it will happen soon trust me we will do it like that and that when that does not happen because she gives excuses

So How do I deal with it I belive she is the one , but the Sex Part is taking a toll on me since I am not able to think about anything else

Update: I m not a Virgin Anymore we did it yesterday,