This sounds like you are trying to organize your thoughts.
I get you have concerns about bringing it up to child, but this isn't even a thing yet, and you haven't talked to Daddy yet... so that one is like "stage 2" thinking to me, not "stage 1." So for now I would set those concerns aside. Deal with one thing at a time.
For stage 1 thinking, it sounds like
- A would be ok
- B would be better
- C would be best
- But I can live with D if I cannot have A, B, or C.
Is going to be something like...
- A: Allowing my Daddy to have another woman involved in the relationship would be hard, but I would not deny him that choice. He has given me that choice, so I should as well.
- B: A MFM, with the other man going outside would not be as hard because though my feelings for him are more than friendship, we do not yet have the relationship that my Daddy and I have.
- C: A MFM “V” model with me as the hinge with poly fidelity would be the best case scenario.
- D: I am perfectly happy with just my Daddy, and if that is the end result, my only wish would be for us to all remain friends regardless of the outcome.
In whatever scenario, you would like a heads up and safer sex practices like condom use.
I want to bring it up to him and get his reaction to what I am feeling, but I am afraid. First and foremost I am so afraid that I will crush his heart and that is the last thing I want to do, I don’t want him to feel like he isn’t enough because he is more than enough.
I think you have to do your side of the job and communicate. Lead with D.
"Can we talk about something? I want to make an appointment when we have time and are not disturbed."
Then when the appointment comes
"I feel a bit weird after this threesome. I am developing feelings for X.
I am totally happy with it just being you and me. But I need to air out, and I also need to know what you are thinking in regards to us. Do you prefer just us? Are you open to either of us dating other people? Something else? I'm feeling like I'd be open to things like.... (Then List A, B, C and reaffirm D. ) But really, I mostly want help with these feelings."
And let Daddy do his side of the job. Let him communicate his ideas. Let him handle his feelings (whatever they may be) about it.
Then say "Thanks for listening. I was feeling weird. Now I feel better. I feel good knowing I can come to you with these weird thoughts and feelings and you will help me."
Keep this simpler on yourself.
Galagirl