I was 17 to my then 15 year old GF... and we were together for another 2ish years after till she met a 40 year old with loads of dosh, a BMW, and a chain of hair salons.
I used to ride back from Norwich to Acle on my bike after working in the wimpy making burgers, thow stones up at her window and when she came down we'd shag around the back of her house... not very romantic... but I so remember loosing my virginity in my bed at my parents house; the rectory lol, to her and being deeply in love.
The funny thing is... most of these posts have people loosing it from an age so much older than all my mates said they lost there's at... if you believed them they were all going hammer and tongs about 14 lmao.
I lost my bi virginity at 18'ish to a couple in Yarmouth who stll to this day remain my friends (i'm 38 now) although we lost contact for a good few years till I saw an advert on SH from them a few years back :-)
It probably took me till I met, swung, and split with a woman I met on the net about 6-7 years ago to be totally comfortable with my sexuality and who I am and what I like... and about 5-6 years ago to feel comfortable with my BDSM side of things and realise that I enjoy inflicting pain/pleasure/humiliation/excitement... and that was probably more dificult to accept that my bi-sexuality as it went more against every socialy acceptable morality than being bi or gay.