Hey Phoenix. Sounds like you are making GAL efforts but are still feeling a bit stuck because your heart still isn't in it. I do not know at what point it is going to stop being an effort for you and become more of a way of life. I suspect you still have a lot of fears and regrets related to your MR. You have to find a way to move forward Phoenix... I mean REALLY move forward... for you. If you really truly love your wife, let her go. Forgive her and more importantly, forgive yourself.
Re: that woman's offer of friendship. TBH, I think that sounds really healthy and smart - especially given where you are at with respect to your feelings for your wife. I met a guy a month ago and we have been developing a friendship. For the most part, I'm okay with it because I really do not want to rush into anything with anybody and I certainly don't want to risk hurting someone or being hurt myself. So...slow and steady seems like the best pace. And don't you want a friendship before you get really involved with anyone anyway? To jump into something more than that, IMO, sounds like a recipe for drama and heartache and you don't need anymore of that.