Communication is the key. Talk to her tell her your concerns and then make the decision that is best for you to stay in or walk away.

 

Heres an update:

 

She's got a lot of explaining to do... unless she comes up with some cold hard evidence to prove otherwise, then she is playing you off... shecould be telling this other guy the same stories and thats why he said he was going to Stephenville. I think it's time to go, just like the rest of this forum said. I just recently had my heart broken over a vaguely similar situation... it's hard, and it's frustrating, and I'm in the boat of wondering if I'll ever trust a woman again.... but it's life, and that's how it is.