If you have the fantasy/desire to eat cum it’s usually easier to start with your own when you’re jacking off. The desire usually does go away the second you squirt that first spurt. You have to force yourself to eat it and in my opinion, it is an acquired taste.
The best way to learn to love cum is by sucking it out of a cock. If the guy you’re sucking just cums in your mouth, you’re caught off guard and not ready to reject it or jerk away. Just start swallowing the moment you feel him pumping his load to you. I found, for myself, that being dressed up and caged worked the best. I felt more in the “role” of a cocksucker and I quickly learned to like swallowing cum.
But… I had been jerking off for years and eating my own way before I got a good load pumped down my throat.
The first and only load I ate from my wife, I wasn’t aware it was there. I only learned of it months after and haven’t been lucky enough to get another that way. So if your wife wants you to clean up your mess afterwards with her, just do it. I think you’ll find it turns you back on after you see how she reacts to it. Your little guy might get back up and want to blow off again, you’ll be proud of him and yourself. Plus if you do, you get another treat and so does she.
The biggest thing here is giving her what she wants/needs by eating your load from her. She’ll be more likely to do something that you desire if you give her what she desires. And while eating your load is wonderful, if you’re a cuck or especially a sissy, eating another man’s load from your woman is heavenly. I guess us sissies are just natural born cocksuckers and cum eaters?