I'm married with kids so my situation is not completely the same. But if I find myself attracted to someone I explain I am putting my family first and have to cut all ties. It's hard and sometimes it takes longer than others but I do it because it's off limits. Why put myself and them in that situation? Now this won't necessarily work for you but it has for me. And I wanted to at least respond

Fefe(28) -bipolar II
Hubby(28)
Son(8)-aspergers and possibly ADHD and odd
Daughter(5)