I want to become a swinger but husband don't!!

I love having sex with big penises, but my husband is so afraid that I am going to leave him because it.. I offer to let me have sex with guys in front of him but he can not stomach me kissing and having sex with other men in front of him, I don't know what to do, any advice? I also interested in joining s site where I can have discreet sex with other men, but i would be cheating on my husband and thats something I am not interested in doing, I found this site, I was thinking about joining because its free..

I really don't know what to do guys, I just need a little advice.

Thanks
Daisy