maybe you're afraid of messing up what you have with her. in a sense you're risking the relationship since no one can be sure how this experiment would turn out.
If you want to make it work with her and you have doubts, then you should make her instrumental in making it happen. A couple of quick questions: Does she feel slighted because you have a desire for cock now and then? Do you tell her that she could enjoy the pleasures of another woman, if she desired? What if she wanted to join in the fun. Does she play bi games with you while using a dildo? It really all depends on how you approach the situation. In our last few years, my wife and I have both had bi experiences and are totally open with each other about it. In our case, it has no affect on our relationship and love for each other. We enjoy our life experiences. There is a certain amount of discretion involved.
