is there a way to detect sobriety from a text ? ( Other than the ungodly spelling)
just because he asked to keep in touch doesn't mean you have to oblige. I think it's perfectly ok to decline that offer, or better yet stop responding, you are only pouring salt on your wounds here.
I am sorry that you are currently hurting. If I were you I would be making a plan to spend my birthday with family and friends far away from the madness. Even a mini overnight destination close to home, ( or a day trip somewhere) the main goal is to be in charge of your special day. Get out there and celebrate you, time to take your life back.