Of course you are not a terrible person................just a lonely person.
A relationship with this other guy as you already know is not the answer. If you decide to leave your hubby for this other guy & then this other guy is not available to you, you would be miserable. If you do deicde to leave, leave for no other reason than you cannot live with an addict, recovering or not anymore.
A relationship is never the answer for anyone. Happiness comes from within.............you must be happy with yourself first, then oneday if you so choose you could be happy with someone else.
Wishing You The Best,
Diane