Ivo fucking Iris would be hot as hell, especially if they did behind their partners back, but it will NEVER happen. For as long as they have been on VV, each person; Ivo, Sonia, Lex and Iris has had so many opportunities to mingle or swap with other partners and they didn't even come close. They are not those kinds of people. Not only have they never swapped, they haven't even so much as kissed or touched or flirted with another person other than their partners.