My girlfriend is wanting DP /u/Ok_Economy_4671 Sex

So me and my girlfriend have been together for little over a year now and we’re open as to what we want to try in the bedroom. So long story short, we’ve tried what I want a few times now, even though it didn’t happen the way I envisioned it,we still tried it. So now she wants to try DP with a straight man (I’m bi) but wants to to pick up a stranger from the club spontaneously.She seen something on here where you should take small steps like dancing with someone in the club to see if I could handle that and then go with him into the bathroom (to make out and be fingered by him) she promises me she won’t suck him because i established it was one of my boundaries. But when I asked why can’t I be involved in the bathroom to make out with her while he fingers her, her response was I can watch to see how I feel about it. Remind you he’s only fucking her analy. She’s originally told me that he wouldn’t talk and it would only be one round. Now she’s saying she wants multiple rounds and positions, she’s telling me it will be a onetime thing. But honestly I feel like once she does it she’ll want to do it more frequently. What would be some small steps that me and her could take to make me feel more comfortable about the situation? Have any other relationships on here been through the shaky steps? How would you do it if you were her or in her shoes

So me and my girlfriend have been together for little over a year now and we’re open as to what we want to try in the bedroom. So long story short, we’ve tried what I want a few times now, even though it didn’t happen the way I envisioned it,we still tried it. So now she wants to try DP with a straight man (I’m bi) but wants to to pick up a stranger from the club spontaneously.She seen something on here where you should take small steps like dancing with someone in the club to see if I could handle that and then go with him into the bathroom (to make out and be fingered by him) she promises me she won’t suck him because i established it was one of my boundaries. But when I asked why can’t I be involved in the bathroom to make out with her while he fingers her, her response was I can watch to see how I feel about it. Remind you he’s only fucking her analy. She’s originally told me that he wouldn’t talk and it would only be one round. Now she’s saying she wants multiple rounds and positions, she’s telling me it will be a onetime thing. But honestly I feel like once she does it she’ll want to do it more frequently. What would be some small steps that me and her could take to make me feel more comfortable about the situation? Have any other relationships on here been through the shaky steps? How would you do it if you were her or in her shoes