I understand that it's your choice, but why? Is it working out as an effective strategy? If you put yourself first how do you think that would change things.
It doesn't matter what was known before getting together. All that matters is if everyone is happy, and if not it needs to be renegotiated.
If you know they don't mean to hurt you does that make it less painful?
Bunny: Mid-20's, bi-sexual, female, 2 partners
Badger: Mid-20's, straight, male, 1 partner
Turtle: Early 30's, straight, male, 1 partner
Bunny & Badger: living together for 4 years
Bunny & Turtle: regular dating a few months
Badger & Turtle: no contact