SET THE SCENE: Bunch of us, 1 couple, me, my mate and girl, go to a baseball game. Lets call my mate: gary and the girl: rose. BACKSTORY: First time meeting rose. The girl in the couple encourages me to accept roses on follow request on insta previously and come along to this baseball game (in order to meet her). In other words rose is interested and want to meet me through her friend. Find out gary had already slept with rose the weekend before. Not gonna lie, i was a bit knocked back after hearing that but i wasnt going to let that stop me from having a good time. HOW IT PLAYED OUT: we all meet up with the girls at the game. It goes great. Beer is going strong. Banter on point. Rose kicks her legs over mine and touching me. Alot of kino from both of us. She is most definitely interested. Me and gary privately talk about his an roses previous sexual encounter and he informs that she will be going home with me tonight and she doesnt mean anything special to her. Now im not a huge fan of getting seconds from any guy i know, specially since she's been interested from last weekend when gary an rose slept together. I wasn't again going to stop from having a good time and go with the flow aka give zero fucks. We decide to go to the couple place to keep the party going. Rose and i are play fighting on the way to the cars and she asks me directly if im coming back to party. Obvs yes. Get back to theirs with the guys (cause rose drove so two cars). We continue the night with us all in thier double bed just laying on eachother and shooting the shit. Comes to a point where rose is massaging me and combing my hair. More kino. Now gary seems to be looking like his making moves with her. His positioning himself strongly in her personal bubble. Even more closer then normal cause again we're all in bed. If you look it like this; rose is slowing getting closer into my bubble while gary is pushing into hers. I hope you understand this. Its obvious what his doing. Ive known this guy for 3 months and his pulling this shit. This is stopping me from escalating with rose. Because i git to deal with this guy and keep the tension with rose. And i was just stumped. Now we dragged to night out too long and we all just left. With rose dropping me an gary off home. What could have i done better in this situation.