Where the fuck do I go from here ?....

Five days ago I finished work early as we were rained off. I thought I'd surprise my young wife Jodie (She's twenty two) by buying her some flowers and picking up something she'd ordered from a sex shop.
Arriving home around half an hour after picking up her latest dildo, I soon heard the sounds of her orgasming coming from our bedroom. It wasn't a surprise, as Jodie has an extremely high sex drive and loves to fuck herself when I'm out at work. Hence the new dildo.
Walking into our bedroom however, I saw my naked wife knelt up on the bed and behind her was a young athletic guy. He was fucking her arsehole and by the sounds of it, he was giving Jodie just what she wanted. I don't know why, but I just stood and watched. And the more I watched the more turned on I became. Eventually as they changed position Jodie noticed me stood there. Her young lover was about to pull out of her arse, but Jodie said "Don't you fucking dare, I'm going to cum again". And within seconds that's just what she did, all over the guys cock.
Looking straight at me my wife said "Well don't just stand there, get undressed and fucking join in". I know before anyone mentions it, that I should have kicked the shit out the guy, but I was so horny watching them fuck, I kind of forgot it was my wife. Plus there was another thing stopping me, a thing which Jodie doesn't know about yet. The young man just so happens to be someone I too have enjoyed sex with.
It's not something she's ever going to know either as my wife detests gay, but especially bisexual men. She thinks they're just lazy, men who can't be bothered to find a sexual woman like her. I know it's stupid but she isn't the brightest button in the box. She is however one of if not he best fucks I've ever had, that's why I married her. If I was going to show the world I was hetro, then who better to marry and who better to fuck when I had the urge to be the dominant partner.
I'm not going to name the young man who was shoving his cock into my wife's arsehole, just as he had fucked mine on many many occasions previously. That's because his father happens to be my boss and his Christian name is very unusual.
Needless to say I did join in and had Jodie sucking my dick, which isn't small by the way, until I shot my load down her throat. I then watched him fuck her to yet another orgasm before she finally curled up and told us both to leave her alone to sleep.
Later that evening my wife acted as if nothing had happened, and I could hardly bring up that I knew the young man who'd only a few hours before, been fucking her in front of me. She did make some suggestion to me enjoying myself and hinted at it happening again. Or as she put it "You didn't seem to mind another man fucking your wife then, maybe in future" She left it at that.
But where does it leave me ?. I simply don't know. I don't want to stop having gay sex myself and enjoy being fucked by the very same person my wife was having a wild time with. Yet now I know she fucks other men behind my back, how do I keep up my hetro macho image to everyone who knows me. As surely it will eventually get out, that I allow other men to screw her....