Advice on new-girlfriend, ex-girlfriend situation?

You can't have everything your way, just because you like to remain friends with an ex, doesn't mean the other person is comfortable or can handle it. My ex tried to be friends with me, and for 8 months i tried, but it damn near killed me. When the dynamics change in a relationship that was once intimate, loving and affectionate, it is sometimes difficult to separate that feeling and shift to a platonic friendship. Be in the present moment! Ex is in the past, you are here in the present and so is this new girlfriend. Stay here in the present moment.