I (20MTF) have been with my girlfriend (21MTF) for 2.5 years now and I love her to death. She's my everything. However, I've hit an issue that is starting to really destroy me from the inside and I don't know what to do.

My girlfriend is poly with one other partner, and initially I was ok with this, but over time I started to feel worse and worse about it to the point where I started throwing up over it. I want to marry this girl, she's what gives me hope in this world, but I feel like I am doomed to fuck it up because of this. I want her all to myself but I can't have her. Any time I've tried to talk to her about it I've been told I'm tired or cranky or something but I seriously don't know what to do.

Do I suck it up? Hope eventually she is exclusive to me? The thought of her even having sex with another person fucks me up big time..

poly never ends well
it's nothing but a tool for manipulators. she doesn't care about you.
get out before you end up a mindfucked bpdemon

>>40577790 (OP)
Been there, didn't end well. You need to lock down someone committed if that's what you want. Give her an ultimatum

>>40577790 (OP)
you need to sabotage the other person and drive them out of the picture and you need to be sneaky and subtle about it so your hand doesn't show too clearly

>>40577847
How do I go about this?

>>40577878
know your enemy and know their weaknesses, be aware of existing points of tension or friction between them and your gf, and find ways to exploit them. find ways to play them into situations where they do bad things or show their worst qualities, and make sure they are caught or exposed. make them look bad in the eyes of your gf. and meanwhile, be aware of things your gf may get from them that they don't get from you, and make sure you are stepping up to fill those needs, and at the same time push harder for monogamy and make it clear that you would be willing to leave if you can't have them exclusively.

weaken the second bond and strengthen your own. but err on the side of doing less rather than doing too much and getting outed as manipulative. be subtle.