For many years, vaginismus was considered to be a condition that involved the muscles around the vagina going into involuntary spasms, thus preventing penetration. However, research has been mixed on this feature of the condition, with quite a few doctors and researchers being unable to find any evidence of actual muscle spasms.
Though not having had intercourse by age 25 is less common these days, some people choose to wait to have sex until they find the right person, relationship or situation. There is nothing wrong with not having had vaginal intercourse by age 25.
Some women who lubricate quite a lot enjoy it or look to it as a sign of their sexual excitement. Other women find that it may be enjoyable up to a point but that too much lubrication can interfere with vaginal sensation or their ability to “feel” their partner during intercourse.