Answered by: Maulana Imran Mughal
Suppose a woman has breastfed a child.
1. Now every man this woman marries during her lifetime, will all of them be considered as this child’s milk father?
2. If this woman touches a man with desire and hurmat musahara takes place between them. Will this man be considered milk father to that child?
بِسْمِ اللهِ الرَّحْمنِ الرَّحِيْم
In the name of Allah, the Most Gracious, the Most Merciful
If a woman has breastfed a child, her husband will be the foster father of that child because he was the reason for her milk. If she marries another man and they consummate the marriage he will be considered the foster father as well.
As for the second query, there are a few types of Hurmat that are established in a few different ways. Hurmat Musaharah is one of these ways and it will be established if she touches a man with desire.
Only Allah SWT knows best
Written by Maulana Imran Mughal
Checked and approved Mufti Mohammed Tosir Miah
Darul Ifta Birmingham
 Ibn Abideen, Radul Muhtaar Ala Ad-Duril Mukhtaar (Daar Aalamil Kutub) Volume 4 Pg 411.
Fatawa Hindiyyah (Darul Kutub Ilmiyyah), Volume 1 Page 376.
 Ibn Abideen, RadulMuhtaar Ala Ad-DurilMukhtaar(DaarAalamilKutub)Volume 4 Pg 100.
Fatawa Hindiyyah(Darul KutubIlmiyyah), Volume 1 Page 302
This answer was collected from DarulIftaBirmingham.co.uk, which is run under the supervision of Mufti Mohammed Tosir Miah from the United Kingdom.