I’m currently on holiday break/vacation from work/school. My SIL (GF twin sister) lives in a city almost 2 hours away from my hometown. I was Invited to stay with her to “help around the house” while there. She’s extremely hot and single and lives alone. There were times when I confused her with her twin sister and grabbed her ass or whispered sexual things in her ear but she always laughed it off. Anytime it’s happened, I went straight to my GF to tell her what happened. She’s been calling me bae around the family and touches me any chance she gets for almost 2 years now. By touch, I mean, hands on stomach, thighs, and arms. There’s tension between the two of us considering she hasn’t had a BF in years and myself, have a GF that sleeps super early and always tired. I’ve caught her checking me out at times and she’s caught me looking at her. Long story short, we share beds throughout the day but sleeps separately. She walks around in only underwear and cami without a bra. On the 2nd day of 1.5 week stay, I have blue b**** and she jokes about it constantly. In the past, we’ve come close to messing around but nothing came of it. They both joke about sharing me but I actually want her. I constantly question if I should make a move.