I am in love dont know what do I do?

didn't you fall in love before? now you've got over her and fallen in love with someone else, but are you sure it's true love? if you leave your wife now then there's no going back. if she gets custody of your son then you will never live with him again and if you get custody of him, your new girlfriend will have to live with him for the rest of her life. Are you sure you're both okay with this? Then there's your new child, any idea what'll happen there? You're three year old son may remember you as dad but you won't live with this one and your second child will not know you properly like he should and you will never live with him. If this love is the same as the last one and a few years go by and you're over her, will you just do this again? I'm not going to tell you what to do, you have to work that out on your own, but unless both you and your girlfriend are both completely one hundred percent happy with this then don't do it.