freaking why is this happening?

There are several annoyances that I have about my roommates. First of all, when did it become a crime to want to wait until I get married to have sex? Yes, you say that's good for me but, you also talk about it all the time and there I am sitting there thinking how do I join this conversation? Morally, I feel dragged down by all the constant talk about pills and missed periods. F that! :( God created me to be pure and he created me to wait on his perfect timing. I prayed since I was very little that my future husband would be a virgin, that he would be a Godly man and would also have the goal to wait until marriage. God blessed me with Erick, who hasn't even kissed another girl. He was annoyed his aunt kissed him on the lips... and was just complaining about it the other day... that's how much it bothered him. How could I go and ruin what I prayed for for so long?
On top of that, these roommates have other issues that morally drag me down. What am I supposed to do about this? I love Tori. But, I came to this semester ready to grow up and ready to get right. I can't do that with someone who goes to chapel and is all inspired and has all these plans and yet she is cool with getting drunk every weekend and sleeping and smoking pot with her boyfriend. That is not the kind of life I want.
Anyone can have that life! I want to be different. I want to be happy. And, I can't be happy like that.
I couldn't be happy if I had slept with Erick. I would be living with regret. I actually had a conversation about regret last night. And it ended with... "I probably will regret it... but, eh I don't care"

Ok so, how do I fix this? I obviously can't go on living this way. I cannot be apart of this. Its stifling and discouraging. I'm 22 years old. I'm over it! I'm graduating in 4 months! I'm probably going to be ready to get married in a year or so depending on Erick's ability to get a job. I'm not interested in smoking pot... I'm not interested, yet, in having sex. The fact is that I realize how great Erick is to me. How could some one give their body over to someone who isn't awesome like Erick, if not better? These dudes that they are dating treat them like crap too...
Ok I'm rambling. I'm hoping to talk with my good friend Stephanie about all of this tonight... and whoever else is ready to listen. I almost cried about this last night... that's how important it is to me!