This happened back in college when I was 21, and this girl I had a crush on (19) texted me to come over her place.
She had a boyfriend for about two years and he hated me, because it probably was obvious how much I was crushing on her. Well turns out he dumped her, and in her heartbreak she texted a bunch of guys to see who would show up for some rebound sex. I came over right away but later that night another guy also did show up. After a couple drinks and heavy teasing, we all decided to go for it and have a threesome. It was one of the most anxious and horny I have ever been.
This was actually a week before Valentines, I was single that year, and she was really bummed about being heartbroken on Valentine’s. While we were laying and cuddling after sex, I asked if I could take her out to dinner for Valentines. Her eyes lit up, she was so happy! She confessed she had a big crush on me too!