My story - I'm married, but I accept the courting of a former employee

I'm married for 2.5 years, no children. We have a good family with my husband, I love him and do not want to leave him. But the previous work met with a guy, we started a conversation on an adult, but only correspondence.

Then they cut me, and it's been 2 months already, and he still writes to me how he wants me. I want to answer him in kind, you know, how to just play, but I'm afraid that this game will eventually go far. And I will not forgive myself for doing this to my husband.

I want to hear advice on how to proceed. I understand that you need to decide for yourself and many will say why I need it, if my husband is good and live in love.