When I first started eating my wife after other guys fucked her and came in her, I was embarrassed about doing it. I always waited until the other guy left. The other guys fucking her were all friends of our who we knew in our everyday life. I like being around guys who have fucked my wife but I thought it would be weird if they knew that I was licking their cum out of my wife after they fucked her.
I eventually got over my inhibitions about it and started eating the other guy's cum out of my wife as soon as he pulled his spent cock out of her. I found out that seeing me do that actually turned on some of the guys. They would get hard again right away watching me eat their cum. Now my friends who fuck my wife all know that I am a cum-eating pervert and I am okay with that
My wife has been having sex with her married boss for years. I don't get to watch them but I do eat her boss's cum every time he fucks my wife.