Sex with consent is not Sin

Talking about sex is taboo in India.Initially,Indian society was quite open about Kama (desire,sex). Kama Sutra was written somewhere between 400 BCE to 200 CE. Khajuraho temple was built around 1000 CE.Quoting from this Wikipedia page
The Khajuraho temples feature a variety of art work, of which 10% is sexual or erotic art outside and inside the temples. Some of the temples that have two layers of walls have small erotic carvings on the outside of the inner wall. Some scholars suggest these to be tantric sexual practices. Other scholars state that the erotic arts are part of Hindu tradition of treating Kama as an essential and proper part of human life, and its symbolic or explicit display is common in Hindu temples.James McConnachie, in his history of the Kamasutra, describes the sexual-themed Khajuraho sculptures as "the apogee of erotic art"
Then it was era of Islamic rule in India brought “Burka” for women and it changed openness of society as far as Sex is concerned.
As per Wikipedia Sexual motivation comes because of hormones. Quoting from the page.
Sexual motivation is influenced by hormones such as testosterone, estrogen, progesterone, oxytocin, and vasopressin. In most mammalian species, sex hormones control the ability to engage in sexual behaviours. However, sex hormones do not directly regulate the ability to copulate in primates (including humans). Rather, sex hormones in primates are only one influence on the motivation to engage in sexual behaviours.
So, if are above age of consent get into relationship or get married and indulge in lovemaking. However if you are not into relationship or divorced or widow or widower,you may indulge in casual lovemaking,there is nothing wrong in that because its urge of human body. If you are committed or married, don’t cheat your partner,however if both of you agree you may indulge in erotic activity outside of your relationship or marriage.
I was raised in conservative family.My view on sex was it should only happen after marriage.But I was wrong.
In previous posts I have mentioned that during my hospitalization in CIP Ranchi in November 2016 ,I had not slept for more than 3.5 months and all my biological functions were normal.It was the time God influenced my intelligence  and thoughts on various front. Some of these are soul, preservation of soul,cycle of life and death, heaven and hell.I was also made aware of fact that what technologies are not available on earth for time being.I will write about these topics in coming weeks and months.I also got answer about Sex and  Heaven.
Sex and Heaven

In Heaven, sex doesn’t lead to procreation.It is only for pleasure.At some point in time, God has a plan when even on earth Sex would not lead to procreation.It may seem like crazy thought, but it isn’t.Yes human being will become immortal and there would be travel of body (not soul) from heaven to earth or vice versa as well.