Wanting to be sexual (teens have needs), feeling the warmth of someone else, feeling loved through sex (validation), feeling worth/useful and please others because in my mind that's what I was supposed to do. Mostly when it comes to men. I saw them as a danger to my mental health, manipulators, "all men are the same" mentality. If I didn't comply they would end up leaving me, I would be trash to them, good for a fuck and thrown away. Not to be judgemental but I feel like your current girl might feel this way too. I still feel this way today, I do not entirely trust men but I don't think every guy is out there to rape me or use me anymore. That's why I avoided that overall for most part of my life. It was a struggle because I wanted sex just as anyone else that age but it always made me feel like utter shit and worthless when it didn't come from a place of love and teens are not about love, they are about experiences and finding themselves. Not a bad thing per se.