I have been trying to train my hubby to be a cuck since I started. It's ironic as it was hubby who wanted me to get into this lifestyle, but he has been reluctant at becoming a cuck himself. At first he was content just for me to go off with guys, but I finally got him to start watching. Which I love, and he does too now.
I mean this in a nice way, as I love my hubby, but I 'broke' him over a year ago. While I was 'owned' I stopped having sex with hubby, only jerking him off occasionally. But I started training him to cum in under half a minute. I would time him, and turn him on but say he's got to cum quickly or its over for tonight. So eventually he learned to shoot his load almost as soon as I started jerking him off.
Off course this meant when we started having sex he cum really quickly. In fact I remember I deliberately wound him up on the first Saturday we were going to have sex, telling him it was going to be great etc. I lay on the bed on the night in my stockings, my hubby got undressed and lay next to me. I touched his cock and whispered 'these are the stockings Leon fucked me in', my hubby shot his load straight away. I said 'oh, is that it then?'. My hubby broke down.
Since then the dynamic changed in our relationship towards me. Not altogether, but he's certainly more willing to go along with cuck type things. He's now happy to be present, watch me and take pics when we can, wear a cage and a little bit of feminisation that I wanted from the start.
He went from the dominant, confident hubby to me being more dominant!
So training can work! X