Yes lots of Christian denominations are uptight about sex. But also depends on the priest/minister too. My Baptist minister was fine with sex, as long as you were married to the woman. He even did a few speeches about how wonderful sex was, and he said "Because God made us this way (to have sex)."
Pretty interesting guy, compared to all the other leches (close-minded priests) I had to put up with.
I have a long time interest in psychology, specializing in relationship dynamics for 30 years.
(Please note, we give the best advice we can based on the information given in a post. For better advice, please include the age of all romantic partners.)