First crush? I was 13 and she was 2 years older than me - actually lost my virginity with her, and amazingly we stuck together after those first two debacles:
Totally panicked the first time she offered it, resulting in her inviting me to use a finger or two to warm up/settle down... still lost it and told her no coz "I hadn't cut my fingernails"
- fukkin hell though, that got round my classmates and I never heard the last of it, hell a couple of them still go on about that on my facebook, over 25 years later!
Second time I just went for it, in a field (long grass, etc), but I was only 13, and after shoving it up I didn't start any thrusting coz I didn't know you were supposed to! ...As if some wizard would appear, zap us with magic and boom, multiple orgasms at the same time! So after her shouting summat like "well? come on then!" I finally got going and lasted, y'know, probably about 20 seconds....
Like I say though, we lasted together for a good 3 months or so after that, in fact I'd improved immensely by the end of it, if I do say so myself - could last anything up to 2 n half minutes hehe!