If I have sex everyday with my fiance, will I eventually become loose?

Unless your partner is extremely well endowed and pounds away at you like a jackhammer on a New York City street then I would not worry about the loosening of your vagina.

Pregnancy, childbirth,aging and being overweight however can result in your vagina, or more specifically the pelvic muscles, to weaken. You can try to minimize it with Kegel exercises or even plastic surgery these days... The former, Kegel exercises, are good for women regardless of the current state of the vagina as it can even enhance the sex.

p.s. Guys can also do Kegel exercises to improve their stamina and hardness.

Short answer, no, not really

My advice is only masturbate DURING sex, if you need to do it to release yourself on him, before he does in you. There are also exercises you can do to to tighten up, also squeezing on him works wonders too.

Well sex does relieve stress so yea sex can help you get loose. Sex is one of the best ways to calm and relax a person down.

Do you mean loose- like a tramp?

Or loose like big pants on those Jenny Craig people?

For the first: maybe, because its fun

For the second: no, because you will always tighten up. Thankfully its a natural thing.