Okay, and then, what about on more of the psychological level? >> On a psychological level, you're right, it's even more complicated. Well, when we talk about psychological emotional needs related to sexual interaction or sexual relationship, so initially, I talked about sexual activity, sexual interaction and sexual relationships sort of broadly. Maybe I would use this opportunity to differentiate among these three. Sexual activities are anything that is sexual. It includes relationships. It includes interaction. It also includes things that you do on your own, like watching pornography, masturbation, that is sexual activity, but it is not necessarily sexual interaction.
>> Right. When you have sexual interaction, you're talking about two or more individuals engaged in an interaction that is sexual in nature and it provides sexual pleasure or sexual experience. But it does not necessarily turn into a relationship. You can imagine people engaged in a sexual interaction that doesn't develop into a relationship. When we talk about a sexual relationship, we're usually talking about something that is longer term, that involves more than one encounter, maybe, something of a relationship going on. When you're talking about activity, the interaction and relationship, obviously, they would be addressing different needs. If you're only looking for more physical kind of satisfaction, sexual activity may work and for some people, there might be their regular source of satisfaction even. I have to say that sexual satisfaction is not always, or very rarely, purely physical. Usually, it also involves a certain kind of psychological gratification. This is why even when people masturbate or when they use pornography, they're using some kind of mental imagery. They're imagining a particular psychological context. So I would say that psychological satisfaction is almost always found in any form of sexual satisfaction. But then when we get into it in more detail, then we will find that some people are using sexual interaction or relationships or activities to satisfy needs which can be like a sense of intimacy. It can be security. It can be domination like an articulation and expression of power. Some people even can use sex to express aggression or hostility. Some people can use sex to express gratitude and appreciation. So there's a huge a range of possible emotional and psychological needs that can be associated with any sexual activity.