How can I make it work please?

I know you are all going to criticize me but probably you may remember we are only human.

He and I have been in love for about 7 years without getting intimate. The reasons for that we were both married. His wife had a long term illness and died 18 months ago. I have had an up and down marital relationship but got worse gradually over the last 7 years and for the last 3 years I kept our relationship to formal communication but we stayed together for social reasons.

Now the man I am in love with is ready to move closer. How do you think I should approach this please? I cannot talk about this to ANYONE THAT I KNOW and it is torturing me not knowing what to do. Can any one help please?