I would not say that Giving your partner a chance of enjoyment with another, or just the self enjoyment of see your partner fuck is the same as homo-eroticism.
I call myself Straight, I think that could change with the right people and under the right conditions....but just because I did not push a hand away from my balls or cock; that would not make me gay or bi. 
Travis  
      are you "bi-curious" then Travis?  
      That would be putting it to strong, is there more than one question there?  
      I used to have sex with women.  I don't any more.  What does that make me?  :giggle:  
      This one keeps cropping up.  Some people just are str8 and thats that, some are bi or curious, and some may change as time goes on.  Its a funny old thing really..... I seem to get slated, and accused of being homophobic when I say we dont meet bi or bi curious guys, and the reason is not cos we dont want my hubby jumped on, its just our choice.  
But I will say with 100% confidence that my hubby is str8 and I can't see anything that would make me feel he would ever be anything other than that.  
Me however, I like ladies and men (well some ladies and some men) but I dont ever think to myself 'cor I fancy her', but if in a sexy situation, and both ladies are inclined, there can be fem/fem play which is great and most enjoyable for both the ladies and the guys.