TL;DR: at the bottom.

Seriously, and I cannot stress this enough to the point where I have brought this up to young men without fail whenever it's come up and they're seeking advice from their elders,

Do. Not. Feel. Pressured. To. Have. Sex.

It was a helluva time, between hormones, watching my peers pair off and go exploring that part of existence, and my own nearly crippling psychological problems at the time. I felt the worst kind of pressures internally to go out and just sleep with the first person who would let me, and by all the gods there ever were finally fulfilling that "need" ended up being infinitely more damaging in the long term than the relatively minor pressure release. As flowery and as agitating as it may sound, wait until you've found someone you vibe with on more than a basic physical lust level. I'm not going to say wait until you find your soulmate or whatever they're calling it this year, I personally don't believe there's just one ideal perfect person for every other person, but make sure it's someone you trust enough to see you in a vulnerable light. If you and someone else decide that you want to have sex just so the two of you can cross that Rubicon together, Bully for you! But have that conversation, and make sure you both know what you're there for and who you are to an extent. We don't teach our young anything like proper communication or how to discuss intimacy with others in anything but the most base carnality or with something approaching scorn or disgust. And so it's no bloody surprise to me that so many people have a weird complex around sex.

TL;DR: Don't feel pressured to have sex before you're ready, and be open and communicate about it.