Im ready but why am i so nervous?

ok well, my boyfriend john was talking to my best friend for life kyle. Kyle and i have each other's password to our accounts...we trust each other fully. the only reason we do is in case something bad happens to each other and i use it to talk with ppl i cant on my and he does the same. So anyway...this message pops up and it was b/w him and john. i know i shouldnt have read it but i was soo curious. johns planning sex with me this weekend...we have talked about it but we decided to let it to be a suprise... so kyle was like well u have to make sure shes fully ready and emotionally ready and john sed dont worry i made sure...she says shes ready (its true) anyway im scared i mean really. why am i soo nervous? to since i have done it before? should we wait longer? we only been going out for a month and half