Being excited and enjoying ourselves being away from alcohol lowers our defensive walls and melts much of our coldness to being empathetic with others -- we start to care about caring for ourselves and others.
This kind of selflessness is very appealing after being so frigged up with alcohol/drugs. Feeling so open can often work against us when we don't have a lot of experience with 'feelin' alright' while being clean n' sober.
I would suggest just forget about it, and concentrate on the goodness of your earlier attitude of enjoying being sober, even if sometimes you're reminded about where you've been, and how you've felt before.
Things do become more stable and comfortable, and you'll soon enough be able to have empathy for others without dragging yourself into emotional hell, I'm sure.
Welcome to SR!
