Kicked in the stomach

[Tara_9]

I've been posting in the "Newcomers" forum under "So discouraged" if you want to see my story that leads up to this.

I'm in absolute shock. I'm devastated. I just found out she's seeing someone. I didn't find out from her, but I know for certain. She sent an e-card to the OP and the confirmation came to our old joint address. I looked at the card--it was sending the OP a kiss. I don't know what to do. She's coming over tomorrow morning to walk the dogs with me. Do I confront her? What do I say? Does this mean all hope is lost? My heart is skipping beats and I think I may be sick. I can't take this--the image of her flirting, kissing, focusing her attention on someone else. She hasn't even been gone two weeks...how is this taking time to be independent and working on herself? How can she do this? We spoke on the phone today before I found out and she didn't seem to want to get off. I ended the call. Then she went over to my parents to spend time with the dogs because they were looking after them today for me. Oh god...She's probably with the OP right now. And now what? Do I tell her she just destroyed me?? I feel pain right into my soul. I consider this cheating. What do I do/say tomorrow? Do I pretend I don't know? What if she tells me? What do I say? Do I tell her not to speak to me again until she's done with that person? I thought we were doing better. I want to call her right now and give her hell and tell her she can forget getting any of the rest of her things. I'm so hurt. Picturing them is agony. What do I do???

Please help--I'm crying so hard I can hardly type.