Had to repost because it got deleted.

Recently discovered I was interested in cuckolding. My girlfriend(24f) was hesitant but could tell I was really interested in it so she decided she would try it. I’m really into the humiliation/sph side of it. We started with some role playing and stuff and eventually she asked one of her guy friends how big he was. He decided to show her and she said it was huge so she decided she would try it out. It turned me on so much but She said he was pretty bad in bed after they did it so she didn’t want to do it again. We were on vacation and went to a club and decided we would try with a random guy there, this time with me watching. It was better for me because I got to watch but again he wasn’t great so she said she enjoyed it because I was into it but it didn’t do anything for her.

We have a great sex life and she says I’m the best sex of her life but looking for advice on how to make sure this cuckolding thing is hot and fun for her as well. I’m pretty average in the size department (6.5in) so it kinda narrows down the pool of bulls and she wants to be dominated so relatively specific there as well. She says the main problem is she says it’s only hot when it’s me fucking her and the emotional connection is what really does it for her. It seems rather difficult to find a situation with someone who would be 1) bigger 2) dominating 3) great in bed and we don’t know if it’s even possible for her to enjoy it without the emotional connection.

Do I just need to find a better bull or is it just going to be something she does for my gratification or is there another way I can make it hot for her?

I really want her to enjoy it and not just because it turns me on so looking for advice on if there’s a way this can have her sexually turned on as well