So me (M20) and my girlfriend (F20) have been together for 3 years now

we're both bisexual and we've been doing some femdom and pegging over the last year or two...

recently I've really been interested in cuck porn so I've been wanting to bring it up to her because I'd be interested in going further with the kink, but I know my girlfriend hasn't really been into 3somes because she feels like it would be cheating and could fuck with our relationship (understandable and I have some of the same feelings)

but that being said..I thought I'd bring it up to her anyway, we talked about it for an hour expressing how we felt about it and how we'd hyperoheticaly do it. Now I'm conflicted about it

I'd like to try aspects of it and maybe do it irl but I'm also worried about it affecting us negatively even tho we have talked about ways we could prevent that from happening.

I'm now seeking advice and tips from anyone who has experience with cuckolding..

Please feel free to give your opinions or advice

I'd be into trying it and I think she would too but I'm not sure if we should end up going through with any of it ......................