I am still in love with my ex and for a long time to cover my hurt I got into a rebound relationship for which I was in denial and now I want to get out and solve stuff with my ex. Is this the right thing to do?

Solving things with the ex, I don't know enough about that, but getting out of the rebound sounds like a good idea until you figure out what you want to do.

How old are you and the ex?

I am 25 and my ex is 34. We dated for 4yrs. The rebound has been for the last year. I don't know how to end it. It's overwhelming yet I know deep down my feelings for my ex are still strong

How can you lie and be deceitful to th guy you are with? Have you even had any contact with your ex? Why are you even in a relationship at all? Why not be single and have your own life for a while?

Honestly when I got with the guy initially it was honest & I was exited about it. I did warn him that I had just got out of a rlship but he said he was OK. After almost 5-6 months the feelings 4 my ex started to hit. Now I feel I was wrong & want him

You need to leave the current boyfriend alone and get your head together.
Why is the ex and ex. Did he leave you or you him?

The last thing any one should do is get into a new relationship, before they have gotten over the old one.

You must spread some Reputation around before giving it to talaniman again.

Not sure I understand your comment

Like I said I was in denial and angry. Now I know better but in the process of it now I got to learn how to deal with what I put myself into and what I caused another guy despite him saying he'd be OK with it

I know I messed up but the guy now knows I had feelings for the ex and he is saying he still loves me. I don't know the best way to deal with it but I guess I am just afraid of hurting him because he is a great guy & I don't know the best way out

You are obviously bothered by this. You need to leave the current guy alone.
You are unhappy, you don't stay with someone just because he is a great guy. If you are not really into this relationship, get out of it.
A guy who is willing to have you knowing you have feeling for someone else has a problem of his own. He is using you too.
You both need to be away from each other.