Andy wrote:... because I'm in love - but I have a longtime companion, too.
I know, I know: that's (at least morally) not okay, but what shall I do?
It's so exciting and I feel sooo good!
Get a third one...
(you're not in love with neither)
As far as what you should do, I'd say move to another country and play dead, but if it was me, I'd try do stick both in bed and have some fun.. in my wild days, now that I've done all tricks in the book, I tend to un-prioritarize these male territorial gene spreading instincts, though still well present, they made me waste way to much time and effort.
Still, back to the menage à trois thing, women tend to separate physical from emotional better - if you can handle it. latinos like me have a hard time sharing - but since you are or seem to be in the emotional arena too, go buy the blessed tickets and run like hell... while you still can.
(of course, I'm just embeleshing the text, I don't think you or anyone should cheat. So be a Man :-p and face the consequences, so you and yours truly can be head up, not humiliated, just sad (?).)
Explaining why with reasonable arguments may also help, at least, to remain friends...
Kind Regards,
AMR
http://www.alvaromrocha.com