On the cake, I lean towards make it. You're still married, living together, so normal would be to make it. There's no reason to escalate the distance between you now. On the other hand, if he comes home to ask for a separation, a cake is super awkward. Eat out and let the restaurant staff know it's a birthday celebration? Buy a dessert & nice bottle of wine -- but nothing so elaborate that it can't be quietly downplayed if necessary? Buy a couple of cute cupcakes?
Home or out... Whatever you would ordinarily be doing at that time of day, I think. It's a big window, so just focus on yourself and whatever fits your routine.
Good luck!!!
Me42, H40 D12, S8, S7 A revealed: 7/13 Sep 4/14; Agreed to D 1/15
