When an introvert is invited to a party AKA me

Last night at a party, two gals approached me and sat on both sides of me and then we chatted and one girl was leaning her shoulder onto mine and i was getting nervous cause I didnt wanna kill the mood and they looked like tjey were alright around me.

then her boyfriend came over and she introduced me to him ajd then i realized there was an issue in their relationship.

But I noticed earlier the host pointed at me when he was talking to those gals and then after that they walked over. And I was just sitting on a couch minding my business trying not to bother anybody andnthey came over and i felt anxious but excited but now it feels like he bribed or told them to talk to me and I feel now like that whole thing was staged and I feel like "Oh I pity the autistic guy over there" moment is happening and now I feel like shit.