when the player is going to have sex he is wearing underwear and the woman is naked HELP

[MaykJ]

so he sticks his penis invisible, does anyone know what the problem is?

[disgruntled87]

sounds like you don't have Schlongs of Skyrim (SOS) installed, or it is being overwritten in your load order.
or if it IS installed, target the character, go into your MCM, and manually edit the character to whichever schlong you deem acceptable