Basically I have been best friends with this guy for 2 years and we’re dating now. its been almost two weeks. He’s friends with mostly girls and his other best friend is a girl. She’s small and sweet and I know nothing can ever happen between them however today we were on this spinning swing with seats at opposite ends and it was spinning quickly so I asked for it to stop. Instead of grabbing the pole on one of the seats to stop it he grabbed under her legs and held onto her back to stop the swing instead of me. He has also invited her to his house alone but his parents were there. She is also my best friend so we can hang out as a three but I sometimes feel like a third wheel. He is very affectionate with his other girl friends. Like he strokes this girls hair and lays his head on her shoulder and lap in front of me. I don’t know if I’m being silly or not but whenever I speak to him about it he doesn’t think he’s done anything wrong. In the past he had another girlfriend who hated me and behaved really horribly towards me she had a bad personality and they broke up after a year and a half slightly because of me but mainly because of her personality but I feel like I’m going through the same thing. The only difference is his best friend is my best friend and I’d never do anything to hurt her unlike his old girlfriend. am I right? should I just end this?