First time!

My boyfriend and I have been dating for almost four months. Last night, we were making out, I gave him a blow job and we have done that before! But he went down on me for the first time and then we had sex for the first time too. It felt so different from all of the other times I have done it. Does sex feel better when you are in love or was it just the heat of the moment? What is your experience with this? And do you have any advice for me?