Married yet in love w/someone else

I just want to say that i am really confused. This is first time in my life when I feel like I don't know what to do. I have a husband and kids and now the person I always thought would be my husband has come back into my life. We got engaged at very young age and everyone said it wouldn't work and we both fed into that and kind gave up on being together. Plus our relationship became long distance when he moved out of state with his family. We hung in there for about 2 years with the long distance thing. Then we kind of let each other go. Through out the years we would find one another but it was never the right time. The first encounter I had just had my 2 older kids and was still in a relationship with there dad. The second encounter I was single and he was married and had a son. I was really against coming between his marriage so we just cried a few tears confessed our love and moved on. Now this is the third encounter and now I am married and he is separated and I have more kids. When we talk it is so deep and the love is so strong but I can not just up and leave my life behind. Ever relationship I have been in, it never had as strong  connection as what I had with him, Including my current one. It is going on 17 years of always having deep feeling and love for him. But whats more confusing is that I don't really know what is going on in life. I can only going on what he tells me, I only talk to him when he calls me I do not know his #.  Should I just let the past be the past or confess my true feeling to my spouse and take a chance with my heart..............to be continued.