She's in a Bad Marriage; Former Love Who Recently Lost His Wife Wants Her Back Badly(Advice column)

Sometimes we find ourselves in very complicated situations and we try to seek for help outside our brain limit,  please advice this sister

I am 32 and presently in a very bad marriage. I got married in 2008. There is this guy in my church I knew before I ever thought of meeting hubby, who has been a very good friend (platonic ), though he wanted a relationship back then but because I was very young and scared of my parents, I rejected him. 

He wanted a relationship with me again during my UNI days but I refused cause he looks like a playboy to me. 2 years back, he started pressurizing me for a relationship again, though he lives abroad. 

Unfortunately, he lost his wife in January, and for the past 4 months he has been disturbing me to leave hubby for him. Matter of fact, I'm beginning to have feelings for him but I'm so scared. Remember I said he looked like play boy to me back then cause he is too handsome. 

I need mature advise on this as I don't know if I can cope with him or just stay put with hubby and keep on hoping for the best.