Paradise is the place of every good act and every noble thought as Allah mentioned in Quran that all ill feelings will be removed away from the chests of people of Paradise (Al-A'raaf, verse 43 and Al-Hijr, verse 47).
Friendship between man and woman who is not Mahram to him will not be imagined in Paradise and no one in Paradise will think about it because it is not a noble thought. Women with out Hijab is also not a noble thought so no woman in Paradise will think about about it.
Wassalam.