I am confused ... please replay if some1 has been in same situation?

I'm sorry but there's no such thing as being in LOVE with two different guys. You need to realize she's playing with your heart whether you believe it or not. You only have one true love in life and if she's telling you she loves some young kid and you then she clearly doesn't love either of you guys. This new guy is just something new and fresh so she must think she has feelings for him. Don't let her go see him...that's stupid and ridiculous in fact you should of left her along time ago because your wasting your time with some girl that's playing with your heart when you could be finding someone better and someone that's willing to take care of your daughter and you. A child isn't a reason to keep a marriage together so please don't think that. I think you need to leave her and move on with your life without this drama. It will be hard and she most likely will run back to you when this 17 year old ditches her but you have to be strong and keep your head up to not go back to her and move on with your own life. Your in this situation to make you stronger so do what's best for your heart and find someone that'll treat you right. Some people don't know exactly what love is and maybe she's one of them. I'm sorry if I'm being harsh but I think it's just the best thing to do in this situation is leave whether she sees this 17 yr old or not. If she's not willing to stick around and just give up on your relationship with her then its not worth trying to keep her around but if she will realize that your the best choice here then try and rebuild anything that has been broken.