1. Everything changes after you lose your virginity....
On Glee, it changed things for Quinn and Puck who ended up having a baby together. So having sex for the first time might change things for the other couples, albeit not as dramatically. Then again, they might feel exactly the same as they did before. Other things that might change them more than having sex: Winning sectionals, getting into college, getting the hell out of Lima.

2. You can’t feel or understand passion until you’ve lost your virginity.
This is the Sleeping Beauty Theory, where Rachel needs Finn to ‘wake her up’ sexually by putting his penis inside her. Only then will Rachel become a sexual person, capable of sexual feelings and sexual musical theater acting. This kind of thinking negates the power of all the many and varied sexual experiences a woman might have that don’t require even the proximity of a penis.

As for Blaine, he’s always oozed sexuality, no matter what Glee wants us to believe in this particular episode (consistency of characters is not their strong suit) In fact, the show last season where he and Rachel had a drunken makeout session was pretty damn hot–hotter than anything I’ve seen her do with Finn.

3. Your first time should be magical and perfect and with someone you love
This trope hits a special nerve because I sat around waiting to have sex with a perfect love, and that’s why I ended up still a virgin at 23. At which point I got tired of waiting and got it over with.

It’s truly lovely to have your first time be with your special someone, and some people will wait for it to happen that way. But what if we don’t have a special someone and want to have sex anyway? Are we doing it wrong? Or what if you do do it with your special someone and it’s less than special? Let’s talk about awkwardness. Or disappointment. Or pain. In the scene where Rachel asked for advice from the girls, it would have been awesome if one of them talked about how they just couldn’t get it in on the first three tries.