Hi Diana,
What a shock to find the man you love with another woman!
It sounds like you have hit the lowest low point. The good news is, it can only get better from here. All you need to do is let time go by and that itself will lift you, day by day. Be patient with yourself, but dont wallow. You may have to force yourself to do things. But it will get better.
This man does not deserve you, never did.
In the past I have also had my heart broken and know how disorienting it can be, how pointless it can feel. I forced myself into intense exercise and honestly it helped me so much. I was at the point where I could not talk or think about what had happened anymore, I just had to DO something or I would become a crazy recluse.
When life feels pointless, it is a good time to reassess and let the pointlessness be a question. Try to keep your heart open and search inside yourself for what the point could be. I hope this doesnt sound too new agey. I really feel we find and create the meaning in our lives. When one source of meaning crumbles, like a relationship, just stay open, stay afloat.
Do you have any cool girlfriends right now- I would go out with you if you were local but by the sound of it - Petrol station- :) we are many miles apart.
Cheers Diana. You are sweet, and I am sorry this man you loved so much hurt you so badly.