Search Results: leaving after one night stand

I've known Josh for 6yrs. He really likes me & Im starting to like him. The problem: I have a fiancé who's in jail and we are in love. Josh & Mike used to be best friends. He introduced me to Mike. But Mike (my man) cheated on me while we were on hard drugs, we've been sober for 3 months now. He's been in jail for 3mths, I willingly got help.
I was having trouble w/my emotions, it was physically painful knowing he cheated. The girl started harassing me, I never said one word to her. She's been mean to me since 2007, never even talked to her, still. She did a lot of messed up shit, even broke my ankle. Once Mike was in his sober mind he cried from guilt & the thot of me leaving & he begged me to stay. I know he can't stand her and is doing everything to keep her away, but it still hurts.
I've been with Josh everyday and we slept together a week ago. At first, I felt so guilty, like a piece of shit for doing that to Mike. Then I think how he did cheat & I felt less guilty, I didn't hurt as bad, and felt better about staying with Mike.
Yesterday, Josh begged me to come hang out with him since he was in town. He lives an hr outside of town. He told me to pack a bag & shower @ the hotel, he didn't want to wait for me to get ready.
We get here & hang out. We ended up having sex again. After, he ran to the store while I took a shower. After my shower, I notice he txted saying his roommate needed help and he would be back asap. Hours went by and he didn't come back. He txted at 3AM saying the roads were horrible (blizzarding all night) and would be back in the morning. He did apologize a few times since I'm stuck here till he gets back.
Could I have done something wrong? Is it possible he is lying about the roads & didn't want to come back? Or am I just over thinking this & its all fine?
What is your advice/take on this? Please don't comment on mike cheating or me cheating. I know we are both in the wrong, u have no clue how guilty I feel.
Thank you!