Show her your that you are genuine. Women want to know they are loved and cared for. Before engaging in a conversation about having s*x, reassure her that you care about her and her well being

Listen to what she says. If she had some bad s*xual experiences, you can reassure her that this will not be the case with you. While listening to her, you can pick up some pointers on what she likes and what she deems pleasurable

Talk to her about the two of you. Ask her questions about the positives and negatives of you two having s*x. When you get a good idea of her thoughts, you will be able to convince her to have s*x more successfully

Do not be afraid to use touch. Make gentle touches to her body when you are referencing s*x. You want her to think s*x with you is a good thing and that she does not want to wait any longer to have s*x with you.

Mentally stimulate her. Sometimes phone s*x is a good preview of real s*x. She will get a preview of what kind of person you are during s*x. If you do not appeal to her during phone s*x, you have an opportunity to tweak your ways when you two start having s*x.

Seal the deal. When you are convincing her to have s*x, be as direct, but genuine, as possible. Tell her that you want to experience something special with her. Make the reference of showing her how much you care about her when you are talking to her about having s*x

Take your time. When you have s*x for the first time, take time to understand which touch or movement excites her. If you do it right the first time you will not have to convince your girlfriend to have s*x anymore.