I think that in general men can't separate sexual experimentation with another man from anal experimentation so it depends on their feelings on anal stimulation. Women tend to look at same sex contact as more of a loving experimental thing without necessarily focussing on any particular act, which means they are a lot less threatened by same sex contact than men are. Of course there's also the fact that some women are attracted to lesbian contact as they know it will stimulate their men/man. I have a friend who considers herself in no way to be bisexual but who used to 'snog' her friend when they were out to get men to buy them drinks.

In general I think that more women would probably experiment than men, but most would be happy for it to be a one-off. For those guys who are actually interested in same sex contact, I think it's more likely that if they enjoy the experience, they will want to repeat it on a regular/ semi-regular basis, despite not necessarily being interested in an emotional relationship with another man.

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