relationship stress sucks. I went the opposite way, when my 6 year relationship was ending I didn't eat for about 4 days. nothing but coffee and cigarettes. no matter how this pans out for you, whether you solve it or dissolve it, you STILL MATTER. and I just hit caps lock accidentally but, I am going to leave it because I think it fits.
you have to do whats best for you, no matter what happens with your relationship, and I think by posting on here that's exactly what you are doing. good luck, I hope everything works out how you want it.