It sounds like you guys live together. If that's so, then it would seem the only decent thing to do would be to let your partner know you're doing okay and/or on the way home. Maybe he feels like you're checking up on him or not giving him his privacy, but I think most couples do communicate what/where/when information when they go out, whether it's a date or not, out of consideration. Your request is not unreasonable. It might be different if you two lived separately.
Hot chick in the city.
Oh, oh, can't you see? Love is the drug for me.