Do you not feel you could work things through with your husband, lexi?
I separated from my husband nearly 2 years ago, and like jazzi, I had to live with him after the separation. We lived together while separated for nearly a year, and it was very very stressful, but I was also very scared of the big move & suddenly being on my own with the boys.
As it happened, I adjusted really well to living alone, and felt a huge weight had been lifted. It was nowhere near as stressful as living together, but no longer being a couple.
My separation was one of the most stressful things I have been through, so I would look at whether there was a way I could make it work first. (I tried pretty much everything before we separated)
I didn't think too much about getting into a new relationship while going through my separation. (I am 35 with two boys) I was actually quite against the thought of getting into another relationship.
Three months after moving into my own place, I agreed to go out with a man, and 8 months on we are still together!
Good luck with whatever you decide.