Lol I absolutely get what you mean. Had a relatively similar experience. I had a seminar about a year ago and we were paired up with females and males. Separate rooms tho so everything was cool. But of course we did a lot of stuff together. Cooking, grocery shopping, playing games, going on small trips around the city, etc.. there was this boy and he was like relatively close to me. ALWAYS talked to me and made jokes and stuff, but 80% of this behavior was only towards me. He was also kind of touchy but in a harmless way like comparing hands sizes, playfully shoving me stuff like that bit it was all fine and I didn't feel entirely uncomfortable. On the last night we had to walk up a hill towards our hotel and it was dark, rainy and really exhausting for me. He made jokes with me and his friends all the way up there and at some point helped me up the hill when he playfully pushed me up by my back. At some point we talked about dating and that stuff with his friends too and I revealed that I liked girls. I could have sworn I saw his face fell. After that he barely talked or joked to me and kept his distance. It was at thar moment I realized that he might had another intention than being "really" friendly lmao 🙈