read dr as fast as you can. you need the basic ideas and then you can start to really concentrate on your plan and goals. answer the questions in the book and stop pursueing and chasing her. don't ask about the om, don't snoop, it will only make you angry and push her away.
the fact of the matter is, you really don't know what is going on with w and om. you may have found some texts but the might be unwanted by her. but don't question her, just drop it with her. easier said then done, i know.
as for the shopping trip, again, you have to trust her. she may have gone with someone, she may not have. but you don't know. when you think something is going on, stop and bring the facts back down to reality and rethink the situation. you will find that it is more of your emotions driving then your head.
keep a good pma (positive mental attitude), act "as if" you expect everything to go well, don't push any r talks, and just keep being positive.