Just make sure u both are clean cause if your a virgin a dirty girl could turn u off forever.I wouldnt worry too much about the mood it will just happen.It might not if shes a virgin too.I tried having sex with my first bf and we tried 5 different times before it actually went in.One night we slept together and it just happened because he turned me on and i was relaxed n horny and lubed up.Slipped in and i couldnt get enough.Youll be right