What should I do. Help

Im 30 married with a 2 yr old.
I have been married to my husband for 6 yrs, we have been together 13 years.*
I recently met someone in a cafe. For this post I will refer to him as jake. We would talk every morning before going off to work our seperate ways. This went on for months. He never asked me out... He knew I was married. A couple of his friends had asked me out and I turned them down.* Our conversations were always about things like the weather, etc, until one day last month when he came up to me acting really flirty and asked me if I knew his name, told me I looked nice, and he gave me some personal background. I think he liked me because he would wait for me every morning..it was pretty obvious he was waiting for me. I would get the butterflies eyerytime I see him and I cant stop thinking about him.
well last week he didnt show up to the cafe.... Turns out he is no longer working for the company in that building.* Im so upset that I wont get to see him anymore. I know im married but I just cant get this guy off my mind.* I have not been happy in my marriage for a long time now, and neither has my husband. we will likely end up dicorced soon. I* have never been with anyone besides my husband, and I dont know if theres more to life. I have never persued another man or even thought Bout another mN before this.

My question is, one of this guys friends frequently comes to the cafe. I only talked to him* a couple times, like hi bye sort of thing. Im thinking about approaching the friend and giving him my number to give to jake.Or asking for jakes number.* It has been just over a week since I have seen jake.* I know it is crazy but I cant stop thinking about him. I have never felt like this before. I have never Even given a guy my number before. Would it be weird to approach his friend?* I dont know why im so attracted to this guy, he is the complete oposite of my type, but from the moment I seen jake I was head over heels.** Have I missed my oportunity to get to know him better, should I try to forget about him and move on, or should I try to find him through* his friend?* If I approach his friend, any advice on how to do it?
alos I know I am married but like I said my husband and I both know it is over, its just a matter of actually calling it quits.