Short answers, pulled from the story.
Most dictionary sources define sexual intercourse as the insertion of an erect male penis inside a female vagina followed by thrusting motions for pleasure or reproduction. Some definitions include anal sex, oral sex, fingering, or use of dildos and vibrators.
Between 70% and 80% of women require direct clitoral stimulation to achieve orgasm. Indirect clitoral stimulation via vaginal intercourse may also be sufficient for some.
In 2010, the National Survey of Sexual Health and Behavior reported that one out of four acts of vaginal intercourse were condom-protected in the United States. Correct and consistent use of latex condoms reduces the risk of HIV/AIDS transmission by approximately 85% to 99%.
In 2012, the Federal Bureau of Investigation changed its definition of rape from carnal knowledge of a female forcibly against her will to penetration no matter how slight of the vagina or anus with any body part or object without consent.
The Roman Catholic Church states that intercourse after matrimonial celebration consummates the marriage while Shakers believed all people should be celibate including married couples. Judaism requires husbands to provide wives with sexual pleasure called onah and Islam views sex within marriage as pleasurable spiritual activity and duty.