How to overcome sexual frustration?

Hello doctor,

I am a 30-year-old male and I have been in a relationship with my girlfriend for the past four years. After a month of dating, she told me that she is a virgin and not open to intercourse. Later, in the relationship, she mentioned that we can involve in intercourse only after the wedding. She was 21 years old when I met her and is now 25. Even after four years, she is still not ready to involve in intercourse or a wedding with me as she wants to focus on her career, which means I would have to wait five more years without any sexual activity, which makes a total of nine years. I was fully sexually active before I met her and have stood by her all these years faithfully. We do involve in close intimacy which ends up with me being rejected for 80 percent.

I am completely frustrated trying to convince her, which is negatively affecting me. She is overall a great person, and I would like to marry her right now, but she would like us to marry after 30. It is a long wait with frustration. I understand that a marriage is not intended only for intercourse, but it is vital for me currently even before marriage. Kindly suggest.

Thank you.