The vaginal walls naturally touch each other when the vagina is empty.
According to general knowledge, engaging in regular sexual activity can increase the muscle tone of the vagina, rather than decrease it.
Sexual activity can be considered a form of exercise, and making love every day for a year will not necessarily make the vagina looser than it was before.
On the other hand, abstaining from sex for a long period may not make the vagina any tighter.
