Ask her how she wants her orgasm

Yes, you have to ask her how she likes to be stimulate and play with. You have to ask her and tell her that you care for her orgasm as well. Most of the guys have no problem for orgasm but for girls, it's one out of three women have experience orgasm. The rest? Yes, they haven't experience orgasm before. I think you care for your partner's sex life, right? I don't think you want her to look for others for her sexual satisfaction. It may lead to other problems if your partner's sex life is not satisfy. You like to see her masturbate in front of you? I think most of the guys like that and she may feel shy to do so, tell her how much you like it and you may see how she play with herself. Your penis is not suitable for her? How can you solve this problem? By using different sex position. Say if you have a short penis, you can bend her leg up to her chest in missionary, this position can help you to touch her g spot more easily. If the penis is thin, this may affect her to feel the fullness while penetrate. You may use those sex position that both her leg stick together and you penetrate from outside, like doggy style. If you have a large one, then you may ask her to be on top of you so that she can control the way she feel comfortable. Most of the women feel shy when they are making love with their love one, and they may not want to risk the relationship by being too wild or shy to tell you what they want. But for guys, they want their women to be a wild cat during sex. Have you tell her about that? If you don't even tell her this then you won't able to tell her about your sexual fantasy. Communicate with her then only your sex life will be more explosive.