Am i overreacting for being sad about my girlfriend not wanting to play us in Paralives?

Hey everyone, for the people that are gamers, the game Paralives just came out and it's something close to the sims. Me and my girlfriend have 3 different worlds of ourselves in the sims and we are in an ldr so it makes it easier to see each interact digitally. I just bought the game and my partner asked who i would be making in the save and I said "Us." and they responded that ah they shouldve known and i guess it hurt a little. I have bpd and they are aware they are my fp but a problem is they get overwhelmed with too much affection so i cant be super affectionate and this is horrible when theyre your fp and i have had past issues with not being able to openly give my partner affection. I shrugged it off and they later messaged me saying they felt that they were weird for me wanting to make us and them wanting to just make a ship theyre fixated in and their ocs. this hurt knowing i wouldnt be in their world, they wouldnt be playing a world with us in it despite saying they miss me constantly and again being in an ldr. i said that i didnt mind and just didnt wanna make it a big issue since they were already having a bad day. they watch me stream the game and i state that the game has exactly one of their tattoos and i joked "Haha you know where you'll put this" and they said "I probably wont be making myself in the game and if i did it would only be so i can take care of my dog" (their dog of 12 years that passed). I just felt more hurt knowing they were willing to put themselves in the game, just, not willing enough for me i guess. is this just stupid bpd things?? am i getting too upset abt this bc theyre my fp?? please i need advice