Without a time frame, I am bewildered. Is the question about the past or present? I'll answer both ways and see what happens.

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Do I wish I had had more or varied sexual experiences in the past before I began my current committed relationshp?
No. Back then, way back then, in the days of free love, love in's, the sexual revolution, wife swapping, we had sex all over the place. Group sex was quite common.

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Do I wish I had more or varied sexual experiences now?
Yes, I do. Ooooo I do. I do, I do, I do.

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As concerns the number of lovers I personally might need to feel sexually satisfied--unknown. In this case, quality outweighs quantity.

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Being human is really a trip.