I have wanted to have sex with my cousin for about 2 years. Last weekend my parents went away for the weekend, so we were hanging out at my house for the two days. I felt really horny Saturday night so I went into my room and started masturbating. I forgot to close my door and my cousin walked in. I tried to hide it but she saw me. At first she just staired and I felt really embarrassed, but then she pulled down her pants and underwear and layed on my bed spread her legs and said fuck me. So we fucked 3 times Saturday and 2 times on Sunday before my parents got home. I am 17 And she is 18. We were both virgins. Is this normal?