I think so .. this happened to me unknowingly .. I think my wife did it on purpose but never said so, very long wet kiss and extra salty and very eager to kiss me this was odd because we've been married awhile she could have taken a few drinks to hide it .. i didn't ask or just say "who did you blow when I went back to room (beach bar vacation)", I'm very familiar with the taste of cum (my cum) but not from her ..