I sort of understand what Mishanya is saying Vashti. I know someone in a similar situation but all is well so far.

If you try out the goods before marriage as a bf/gf relationship involving sex and then a marriage is proposed, the couple is not wondering about sex or expecting the sex to change. Complaints of separation would not be expected because of sex issues if sex was discussed and tested before marriage. However, if the goods are tried out after marriage, then you expect your partner to be at the same level of sexual intimacy for whatever reasons and can cause marital issues if one is not willing to negotiate and you cannot simply breakup like bf/gf.

I also under what Vashti is saying Mishanya. That communication is needed whether they are married are not.