how can i do ,can you help me

I think that the reason why she left you because you weren't really her priority or it could be that she was not strong enough to fight her feelings for you... I would suggest that you should take good care of your wife most especially your child. You're already at peace so it's better if you'll stay that way. Leave that other girl alone. She's no use.

if you're married, forget about his. Remember you've tied the sacred promise with your partner. Although she is more beautiful, please keep holding your sacred promise

Now that she left you for another country it means that at that time her priority was not you so she made that choice and now that you are married and have a baby she cannot just crop up like this because when you were waiting for her she did not turn up and now she wants to come back, I would say a No to this because now your life is different you have a wife who loves you a lot and a baby who needs you so you cannot love someone else now. It is practical and understandable too.

questions: 1. when she left, did you broke-up? or what is the status of your relationships? 2. is her "contect me" means that the two of you get back to where you left 5 years ago? 3. does she want you back as a boyfriend? your story is not clear to me, but what i understand so far is your ex contacted you, and you are confused how to respond to her. Now, if you are married, have a baby and is happy and contented with it then why bother with the return of your ex? maybe she does not mean anything when she "contect" you. maybe she just want to just greet you. Have a good day