The phrase "allowing intercourse" is correct and usable in written English.
It can be used in contexts discussing sexual activity, relationships, or reproductive health.
Example: "The new policy is aimed at allowing intercourse between consenting adults in a safe environment."
Alternatives: "permitting sexual activity" or "facilitating sexual relations."
Now, I'm not able to glean a ton of info from your e-mail but from what I can make out, it seems like you've stumbled upon some sort of potion or secret invention that will allow intercourse to continue for 100 times its normal duration.
The woman undergoes a painful reversal of this procedure on her wedding to allow intercourse.
Some women who have had this procedure need surgery to "open" the fused genital area to resolve chronic infections or to allow for intercourse and easier childbirth.
Two physicians (Dr. DePoo and Dr. Foraker) who attended the 1940 autopsy of Hoyos's remains recalled in 1972 that a paper tube had been inserted in the vaginal area of the corpse that allowed for intercourse.
ED, sometimes called "impotence", is the repeated inability to get or maintain a firm enough erection to allow sexual intercourse [ 2].
Lost in the debate over the legal age of consent, say some observers, is whether the government should be playing a role at all in deciding who is allowed to have intercourse.
The pamphlet's Q&A format includes the following: Question: Is it allowed to have intercourse with a female captive immediately after taking possession of her? Answer: If she is a virgin, her master can have intercourse with her immediately after taking possession.
However, as members of other dorms who are of the same gender are allowed and sexual intercourse is banned by the University's rules governing students, many students believe these rules are in place to limit heterosexual sexual activity on campus.
Analysis of last sexual intercourse allows a specific risky behavior to be examined along with the different reasons for this behavior: respondent characteristics along with those of his male or female partner, but also information about their relationship and the location of the sexual acts.
